diff --git "a/trees/auto_problem_097_tree.json" "b/trees/auto_problem_097_tree.json" new file mode 100644--- /dev/null +++ "b/trees/auto_problem_097_tree.json" @@ -0,0 +1,113043 @@ +{ + "problem_id": "auto_problem_097", + "problem_text": "PROBLEM: Truss optimization problem (ground structure variant 97)\n\nINITIAL STRUCTURE:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nLOADING:\n Joint J3: Force=(0, -76985, 0) N\n Joint J4: Force=(0, -45702, 0) N\n Joint J5: Force=(0, -56759, 0) N\n\nDESIGN GOALS:\n - Minimum Factor of Safety (buckling): 1.5\n - Minimum Factor of Safety (yielding): 1.5\n - Maximum allowable mass: 245.58 kg\n - Objective: Minimize mass while satisfying FOS constraints", + "correct_answer": "Optimal feasible solution found via LP", + "tree_type": "modification", + "root_id": "node_0", + "total_nodes": 3458, + "max_depth": 10, + "nodes": { + "node_0": { + "node_id": "node_0", + "content": "INITIAL DESIGN (Trace 0)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1": { + "node_id": "node_1", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 167.87 kg\n Factor of Safety: 1.21\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.87050329891224, + "fos_buckling": 1.205086698434028, + "fos_yielding": 3.2977508692008657, + "deflection": 0.002001687579203276, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002412)" + }, + "parent_node_id": "node_0", + "improvement_over_parent": null + }, + "node_2": { + "node_id": "node_2", + "content": "MODIFICATION: Increase 1 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 171.35 kg\n Factor of Safety: 1.20\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.3522824120073, + "fos_buckling": 1.2046424465344032, + "fos_yielding": 3.2976130372010997, + "deflection": 0.001883305493173697, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.357)" + }, + "parent_node_id": "node_1", + "improvement_over_parent": null + }, + "node_3": { + "node_id": "node_3", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 215.72 kg\n Factor of Safety: 1.46\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.71718357362852, + "fos_buckling": 1.4571030604602353, + "fos_yielding": 4.147234806555789, + "deflection": 0.0015008256027774882, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.284)" + }, + "parent_node_id": "node_2", + "improvement_over_parent": null + }, + "node_4": { + "node_id": "node_4", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 220.89 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.8915264503572, + "fos_buckling": 1.568168537419365, + "fos_yielding": 4.159183040182258, + "deflection": 0.0014528692418048445, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_3", + "improvement_over_parent": null + }, + "node_5": { + "node_id": "node_5", + "content": "MODIFICATION: Increase 8 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0082)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 236.81 kg\n Factor of Safety: 1.57\n Max Deflection: 1.35e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 236.81418684302017, + "fos_buckling": 1.5720661634154842, + "fos_yielding": 4.154116162152257, + "deflection": 0.0013475671606224095, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.429)" + }, + "parent_node_id": "node_4", + "improvement_over_parent": null + }, + "node_6": { + "node_id": "node_6", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_5", + "improvement_over_parent": null + }, + "node_7": { + "node_id": "node_7", + "content": "INITIAL DESIGN (Trace 1)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 159.91 kg\n Factor of Safety: 0.88\n Max Deflection: 2.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.90965379429298, + "fos_buckling": 0.8776917601339318, + "fos_yielding": 3.5868423926561506, + "deflection": 0.002234809235576231, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_8": { + "node_id": "node_8", + "content": "MODIFICATION: Increase 0 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 164.27 kg\n Factor of Safety: 0.88\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.2711374231804, + "fos_buckling": 0.877285994136442, + "fos_yielding": 3.5868423926561506, + "deflection": 0.0021086313253099475, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.429)" + }, + "parent_node_id": "node_7", + "improvement_over_parent": null + }, + "node_9": { + "node_id": "node_9", + "content": "MODIFICATION: Increase 8 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 177.03 kg\n Factor of Safety: 1.28\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.03407749690214, + "fos_buckling": 1.2811855510896808, + "fos_yielding": 3.586842392656151, + "deflection": 0.0018040696733095899, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.582)" + }, + "parent_node_id": "node_8", + "improvement_over_parent": null + }, + "node_10": { + "node_id": "node_10", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 187.76 kg\n Factor of Safety: 1.34\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.7597968676118, + "fos_buckling": 1.3385530736959674, + "fos_yielding": 3.586842392656151, + "deflection": 0.0017170649329817328, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002609)" + }, + "parent_node_id": "node_9", + "improvement_over_parent": null + }, + "node_11": { + "node_id": "node_11", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 219.56 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.55539415352447, + "fos_buckling": 1.5216830760875915, + "fos_yielding": 4.192557540571598, + "deflection": 0.001471577596084237, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.186)" + }, + "parent_node_id": "node_10", + "improvement_over_parent": null + }, + "node_12": { + "node_id": "node_12", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.11 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1098014892225, + "fos_buckling": 1.5666192474703176, + "fos_yielding": 4.148859245504942, + "deflection": 0.0014514056373055352, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_11", + "improvement_over_parent": null + }, + "node_13": { + "node_id": "node_13", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_12", + "improvement_over_parent": null + }, + "node_14": { + "node_id": "node_14", + "content": "INITIAL DESIGN (Trace 2)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_15": { + "node_id": "node_15", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.83 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 217.83041237700692, + "fos_buckling": 1.523027767022278, + "fos_yielding": 4.195107472363622, + "deflection": 0.0014741560257744077, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_14", + "improvement_over_parent": null + }, + "node_16": { + "node_id": "node_16", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 221.38 kg\n Factor of Safety: 1.46\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.38481971270494, + "fos_buckling": 1.4614574771334958, + "fos_yielding": 4.157230277253348, + "deflection": 0.0014583053817136544, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_15", + "improvement_over_parent": null + }, + "node_17": { + "node_id": "node_17", + "content": "MODIFICATION: Increase 5 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0084)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 234.00 kg\n Factor of Safety: 1.14\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 234.00319174990148, + "fos_buckling": 1.1432632172707864, + "fos_yielding": 4.164802463467791, + "deflection": 0.0014405301727633333, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.479)" + }, + "parent_node_id": "node_16", + "improvement_over_parent": null + }, + "node_18": { + "node_id": "node_18", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_17", + "improvement_over_parent": null + }, + "node_19": { + "node_id": "node_19", + "content": "INITIAL DESIGN (Trace 3)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 128.56 kg\n Factor of Safety: 0.90\n Max Deflection: 2.57e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.56076490997765, + "fos_buckling": 0.90111424277936, + "fos_yielding": 2.510214403831292, + "deflection": 0.002565094390142265, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_20": { + "node_id": "node_20", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 148.42 kg\n Factor of Safety: 1.03\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.42079239776606, + "fos_buckling": 1.0269480155427448, + "fos_yielding": 2.8995703432244144, + "deflection": 0.002224267995546727, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.164)" + }, + "parent_node_id": "node_19", + "improvement_over_parent": null + }, + "node_21": { + "node_id": "node_21", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 165.75 kg\n Factor of Safety: 1.13\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.7517856888908, + "fos_buckling": 1.1338197994982007, + "fos_yielding": 3.2397815056136325, + "deflection": 0.001993562582690558, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.125)" + }, + "parent_node_id": "node_20", + "improvement_over_parent": null + }, + "node_22": { + "node_id": "node_22", + "content": "MODIFICATION: Increase 2 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 167.26 kg\n Factor of Safety: 1.13\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.262070170255, + "fos_buckling": 1.130756598751221, + "fos_yielding": 3.2310287028027806, + "deflection": 0.0019876150392267524, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.621)" + }, + "parent_node_id": "node_21", + "improvement_over_parent": null + }, + "node_23": { + "node_id": "node_23", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.09 kg\n Factor of Safety: 1.38\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.09142230629487, + "fos_buckling": 1.380307516648853, + "fos_yielding": 4.064245068822847, + "deflection": 0.0015858229002226449, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.280)" + }, + "parent_node_id": "node_22", + "improvement_over_parent": null + }, + "node_24": { + "node_id": "node_24", + "content": "MODIFICATION: Increase 5 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.83 kg\n Factor of Safety: 1.52\n Max Deflection: 1.57e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.83442748868725, + "fos_buckling": 1.5226866728698827, + "fos_yielding": 4.193384840726228, + "deflection": 0.001571511085115831, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.203)" + }, + "parent_node_id": "node_23", + "improvement_over_parent": null + }, + "node_25": { + "node_id": "node_25", + "content": "MODIFICATION: Increase 0 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.60 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.6014613543789, + "fos_buckling": 1.521921056555413, + "fos_yielding": 4.193384840726228, + "deflection": 0.0014711051124291917, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.397)" + }, + "parent_node_id": "node_24", + "improvement_over_parent": null + }, + "node_26": { + "node_id": "node_26", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.15586869007691, + "fos_buckling": 1.5673661276504935, + "fos_yielding": 4.149659908894124, + "deflection": 0.001450927156937142, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_25", + "improvement_over_parent": null + }, + "node_27": { + "node_id": "node_27", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_26", + "improvement_over_parent": null + }, + "node_28": { + "node_id": "node_28", + "content": "INITIAL DESIGN (Trace 4)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 131.62 kg\n Factor of Safety: 0.08\n Max Deflection: 1.83e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.62227092891024, + "fos_buckling": 0.0765670111310917, + "fos_yielding": 1.1025534460480146, + "deflection": 18336892461731.906, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_29": { + "node_id": "node_29", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 169.30 kg\n Factor of Safety: 1.60\n Max Deflection: 4.20e+12 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 169.3002927539788, + "fos_buckling": 1.596215774119555, + "fos_yielding": 4.198538885450399, + "deflection": 4197079378311.392, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.314)" + }, + "parent_node_id": "node_28", + "improvement_over_parent": null + }, + "node_30": { + "node_id": "node_30", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 212.91 kg\n Factor of Safety: 1.26\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.9113469967395, + "fos_buckling": 1.2602998427513419, + "fos_yielding": 4.198538885450399, + "deflection": 0.001475719091495505, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_29", + "improvement_over_parent": null + }, + "node_31": { + "node_id": "node_31", + "content": "MODIFICATION: Increase 3 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.73 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.73171464967393, + "fos_buckling": 1.5232620032557065, + "fos_yielding": 4.198538885450399, + "deflection": 0.0014696489444842437, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.595)" + }, + "parent_node_id": "node_30", + "improvement_over_parent": null + }, + "node_32": { + "node_id": "node_32", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3448192644346, + "fos_buckling": 1.5686213990544704, + "fos_yielding": 4.153362461552005, + "deflection": 0.00144991348565306, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_31", + "improvement_over_parent": null + }, + "node_33": { + "node_id": "node_33", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_32", + "improvement_over_parent": null + }, + "node_34": { + "node_id": "node_34", + "content": "INITIAL DESIGN (Trace 5)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 109.26 kg\n Factor of Safety: 0.16\n Max Deflection: 8.97e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.25529818159686, + "fos_buckling": 0.16041699394017794, + "fos_yielding": 2.2051068920960297, + "deflection": 8974210233104.47, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_35": { + "node_id": "node_35", + "content": "MODIFICATION: Increase 7 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 113.84 kg\n Factor of Safety: 0.18\n Max Deflection: 1.98e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.84321897009876, + "fos_buckling": 0.1783113085153243, + "fos_yielding": 0.7771775834298766, + "deflection": 19828684959338.133, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.202)" + }, + "parent_node_id": "node_34", + "improvement_over_parent": null + }, + "node_36": { + "node_id": "node_36", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 116.23 kg\n Factor of Safety: 0.04\n Max Deflection: 9.49e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.23261222062891, + "fos_buckling": 0.04318391035659356, + "fos_yielding": 0.9968821404627871, + "deflection": 0.009494613702873985, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001283)" + }, + "parent_node_id": "node_35", + "improvement_over_parent": null + }, + "node_37": { + "node_id": "node_37", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n\nPerformance:\n Mass: 145.54 kg\n Factor of Safety: 1.01\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.54209684805363, + "fos_buckling": 1.0127521472229022, + "fos_yielding": 2.786156906407505, + "deflection": 0.0022172358072770257, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003760)" + }, + "parent_node_id": "node_36", + "improvement_over_parent": null + }, + "node_38": { + "node_id": "node_38", + "content": "MODIFICATION: Increase 4 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n\nPerformance:\n Mass: 152.24 kg\n Factor of Safety: 1.01\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.23891124908042, + "fos_buckling": 1.0127521472229033, + "fos_yielding": 2.786156906407505, + "deflection": 0.0022172358072770257, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.355)" + }, + "parent_node_id": "node_37", + "improvement_over_parent": null + }, + "node_39": { + "node_id": "node_39", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 155.72 kg\n Factor of Safety: 0.85\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.71688212854627, + "fos_buckling": 0.8494297273246466, + "fos_yielding": 2.8009675574984882, + "deflection": 0.002134732299907244, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001548)" + }, + "parent_node_id": "node_38", + "improvement_over_parent": null + }, + "node_40": { + "node_id": "node_40", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0061)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 185.86 kg\n Factor of Safety: 1.01\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.8642912204171, + "fos_buckling": 1.0084310421916451, + "fos_yielding": 3.343853629403137, + "deflection": 0.0017904938524383586, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_39", + "improvement_over_parent": null + }, + "node_41": { + "node_id": "node_41", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0077)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 231.13 kg\n Factor of Safety: 1.24\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 231.1276803074997, + "fos_buckling": 1.2438362811255168, + "fos_yielding": 4.159621205528584, + "deflection": 0.0014421976934942283, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.269)" + }, + "parent_node_id": "node_40", + "improvement_over_parent": null + }, + "node_42": { + "node_id": "node_42", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_41", + "improvement_over_parent": null + }, + "node_43": { + "node_id": "node_43", + "content": "INITIAL DESIGN (Trace 6)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n\nPerformance:\n Mass: 108.67 kg\n Factor of Safety: 0.54\n Max Deflection: 2.45e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.66772414903771, + "fos_buckling": 0.5377102146767448, + "fos_yielding": 2.8047683657411016, + "deflection": 2450434953717.0522, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_44": { + "node_id": "node_44", + "content": "MODIFICATION: Increase 5 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n\nPerformance:\n Mass: 109.65 kg\n Factor of Safety: 1.06\n Max Deflection: 7.28e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.64764317497648, + "fos_buckling": 1.0585539494177505, + "fos_yielding": 2.984290912157675, + "deflection": 7279479939600.597, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.337)" + }, + "parent_node_id": "node_43", + "improvement_over_parent": null + }, + "node_45": { + "node_id": "node_45", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 137.86 kg\n Factor of Safety: 0.08\n Max Deflection: 1.75e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.86092890559866, + "fos_buckling": 0.08286154092972656, + "fos_yielding": 2.2051068920960297, + "deflection": 17519683508959.031, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.277)" + }, + "parent_node_id": "node_44", + "improvement_over_parent": null + }, + "node_46": { + "node_id": "node_46", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 148.27 kg\n Factor of Safety: 0.11\n Max Deflection: 5.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.2665629357974, + "fos_buckling": 0.10952629901231871, + "fos_yielding": 1.7847574381313087, + "deflection": 0.005825553083019325, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002525)" + }, + "parent_node_id": "node_45", + "improvement_over_parent": null + }, + "node_47": { + "node_id": "node_47", + "content": "MODIFICATION: Increase 8 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 149.71 kg\n Factor of Safety: 0.11\n Max Deflection: 5.82e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.7057872249041, + "fos_buckling": 0.1095095670587171, + "fos_yielding": 1.784484786914987, + "deflection": 0.005824434912660649, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.272)" + }, + "parent_node_id": "node_46", + "improvement_over_parent": null + }, + "node_48": { + "node_id": "node_48", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 185.07 kg\n Factor of Safety: 1.34\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.07277390730133, + "fos_buckling": 1.3434214515680567, + "fos_yielding": 3.443201094366721, + "deflection": 0.0017454940451382963, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004655)" + }, + "parent_node_id": "node_47", + "improvement_over_parent": null + }, + "node_49": { + "node_id": "node_49", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.00 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.9959187802295, + "fos_buckling": 1.5669134267506415, + "fos_yielding": 4.145946780324164, + "deflection": 0.001452117650653511, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.225)" + }, + "parent_node_id": "node_48", + "improvement_over_parent": null + }, + "node_50": { + "node_id": "node_50", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_49", + "improvement_over_parent": null + }, + "node_51": { + "node_id": "node_51", + "content": "INITIAL DESIGN (Trace 7)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0018)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 94.41 kg\n Factor of Safety: 0.56\n Max Deflection: 3.33e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 94.40573096962262, + "fos_buckling": 0.5627229753354757, + "fos_yielding": 1.3172545129442546, + "deflection": 0.003330683550202917, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_52": { + "node_id": "node_52", + "content": "MODIFICATION: Increase 4 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 100.57 kg\n Factor of Safety: 0.50\n Max Deflection: 3.24e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 100.56944363704889, + "fos_buckling": 0.49811873767340514, + "fos_yielding": 2.0221152068713577, + "deflection": 0.0032402111664842684, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.582)" + }, + "parent_node_id": "node_51", + "improvement_over_parent": null + }, + "node_53": { + "node_id": "node_53", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 119.53 kg\n Factor of Safety: 0.58\n Max Deflection: 2.73e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.53347334975598, + "fos_buckling": 0.5815905094939943, + "fos_yielding": 2.402263784764638, + "deflection": 0.0027286397705768173, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.198)" + }, + "parent_node_id": "node_52", + "improvement_over_parent": null + }, + "node_54": { + "node_id": "node_54", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 136.59 kg\n Factor of Safety: 0.65\n Max Deflection: 2.39e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.58536908199872, + "fos_buckling": 0.6539081674525944, + "fos_yielding": 2.743761131758744, + "deflection": 0.002389920915695892, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_53", + "improvement_over_parent": null + }, + "node_55": { + "node_id": "node_55", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 144.94 kg\n Factor of Safety: 0.77\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.93663458335413, + "fos_buckling": 0.7676619051392014, + "fos_yielding": 2.751585654857974, + "deflection": 0.0023287897735708367, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001996)" + }, + "parent_node_id": "node_54", + "improvement_over_parent": null + }, + "node_56": { + "node_id": "node_56", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 177.58 kg\n Factor of Safety: 0.91\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.58309839268938, + "fos_buckling": 0.9130489887347504, + "fos_yielding": 3.3687617141530186, + "deflection": 0.0019031710277585376, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.242)" + }, + "parent_node_id": "node_55", + "improvement_over_parent": null + }, + "node_57": { + "node_id": "node_57", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 218.08 kg\n Factor of Safety: 1.08\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.08446882542142, + "fos_buckling": 1.0801846866573321, + "fos_yielding": 4.133042483248638, + "deflection": 0.001552166453354009, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.250)" + }, + "parent_node_id": "node_56", + "improvement_over_parent": null + }, + "node_58": { + "node_id": "node_58", + "content": "MODIFICATION: Increase 0 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.63 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.62990099927384, + "fos_buckling": 1.5701218763652345, + "fos_yielding": 4.159410202163491, + "deflection": 0.001448113167518855, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.490)" + }, + "parent_node_id": "node_57", + "improvement_over_parent": null + }, + "node_59": { + "node_id": "node_59", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_58", + "improvement_over_parent": null + }, + "node_60": { + "node_id": "node_60", + "content": "INITIAL DESIGN (Trace 8)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 160.70 kg\n Factor of Safety: 0.86\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.69862404516775, + "fos_buckling": 0.8629991184771533, + "fos_yielding": 2.2911378642033333, + "deflection": 0.002105520388240337, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_61": { + "node_id": "node_61", + "content": "MODIFICATION: Increase 6 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 168.25 kg\n Factor of Safety: 0.95\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.25313454077002, + "fos_buckling": 0.9505252485486381, + "fos_yielding": 2.3138579613669537, + "deflection": 0.0019012112932257933, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.374)" + }, + "parent_node_id": "node_60", + "improvement_over_parent": null + }, + "node_62": { + "node_id": "node_62", + "content": "MODIFICATION: Increase 3 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 179.44 kg\n Factor of Safety: 0.82\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.43686728306864, + "fos_buckling": 0.8231257440115243, + "fos_yielding": 3.59315884098674, + "deflection": 0.0018516946253213271, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.623)" + }, + "parent_node_id": "node_61", + "improvement_over_parent": null + }, + "node_63": { + "node_id": "node_63", + "content": "MODIFICATION: Increase 4 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 181.27 kg\n Factor of Safety: 0.77\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.27298982483796, + "fos_buckling": 0.7710504621275258, + "fos_yielding": 3.588490180705376, + "deflection": 0.0018478602646523092, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.562)" + }, + "parent_node_id": "node_62", + "improvement_over_parent": null + }, + "node_64": { + "node_id": "node_64", + "content": "MODIFICATION: Increase 6 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 190.42 kg\n Factor of Safety: 1.20\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.42057041928769, + "fos_buckling": 1.1967088202098681, + "fos_yielding": 3.614897178841641, + "deflection": 0.0017107351977119713, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.342)" + }, + "parent_node_id": "node_63", + "improvement_over_parent": null + }, + "node_65": { + "node_id": "node_65", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.15 kg\n Factor of Safety: 1.33\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.15141341653703, + "fos_buckling": 1.3250118972635636, + "fos_yielding": 4.139137092558528, + "deflection": 0.0014961406954895821, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.160)" + }, + "parent_node_id": "node_64", + "improvement_over_parent": null + }, + "node_66": { + "node_id": "node_66", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3257562932657, + "fos_buckling": 1.5682223479482453, + "fos_yielding": 4.1528892507254, + "deflection": 0.0014499567804046592, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_65", + "improvement_over_parent": null + }, + "node_67": { + "node_id": "node_67", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_66", + "improvement_over_parent": null + }, + "node_68": { + "node_id": "node_68", + "content": "INITIAL DESIGN (Trace 9)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 167.97 kg\n Factor of Safety: 0.53\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.97026965527505, + "fos_buckling": 0.5301880594160606, + "fos_yielding": 3.4408934860428153, + "deflection": 0.002076405932085059, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_69": { + "node_id": "node_69", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 172.34 kg\n Factor of Safety: 0.58\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.3393752969197, + "fos_buckling": 0.581624058587974, + "fos_yielding": 3.449676441447679, + "deflection": 0.002034156112570956, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001976)" + }, + "parent_node_id": "node_68", + "improvement_over_parent": null + }, + "node_70": { + "node_id": "node_70", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 204.25 kg\n Factor of Safety: 0.67\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.2476467633319, + "fos_buckling": 0.671992443744154, + "fos_yielding": 4.082636760640387, + "deflection": 0.0017171942082587017, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_69", + "improvement_over_parent": null + }, + "node_71": { + "node_id": "node_71", + "content": "MODIFICATION: Increase 0 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 207.01 kg\n Factor of Safety: 0.74\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.00859811765255, + "fos_buckling": 0.7376077757397586, + "fos_yielding": 4.092180391344518, + "deflection": 0.0016783823726752333, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.200)" + }, + "parent_node_id": "node_70", + "improvement_over_parent": null + }, + "node_72": { + "node_id": "node_72", + "content": "MODIFICATION: Increase 7 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0042)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 211.73 kg\n Factor of Safety: 0.63\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.73155974039685, + "fos_buckling": 0.6259032869143848, + "fos_yielding": 4.07358300264707, + "deflection": 0.001666178356621367, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.645)" + }, + "parent_node_id": "node_71", + "improvement_over_parent": null + }, + "node_73": { + "node_id": "node_73", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_72", + "improvement_over_parent": null + }, + "node_74": { + "node_id": "node_74", + "content": "INITIAL DESIGN (Trace 10)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 150.16 kg\n Factor of Safety: 0.96\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.16210174839162, + "fos_buckling": 0.9564098640043932, + "fos_yielding": 2.328271497714236, + "deflection": 0.001982206601788308, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_75": { + "node_id": "node_75", + "content": "MODIFICATION: Increase 8 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 152.78 kg\n Factor of Safety: 0.96\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.78430376858367, + "fos_buckling": 0.9564098640043932, + "fos_yielding": 2.328271497714236, + "deflection": 0.0019724798888643307, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.418)" + }, + "parent_node_id": "node_74", + "improvement_over_parent": null + }, + "node_76": { + "node_id": "node_76", + "content": "MODIFICATION: Increase 4 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 159.37 kg\n Factor of Safety: 1.19\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.37020083303665, + "fos_buckling": 1.1885862720611788, + "fos_yielding": 3.11658937973562, + "deflection": 0.0019724798888643307, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.362)" + }, + "parent_node_id": "node_75", + "improvement_over_parent": null + }, + "node_77": { + "node_id": "node_77", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 165.77 kg\n Factor of Safety: 1.22\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.76558046678522, + "fos_buckling": 1.2226916268872283, + "fos_yielding": 3.084342331715737, + "deflection": 0.0019463317931050618, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001858)" + }, + "parent_node_id": "node_76", + "improvement_over_parent": null + }, + "node_78": { + "node_id": "node_78", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 198.92 kg\n Factor of Safety: 1.43\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.92456735674747, + "fos_buckling": 1.4267934865528311, + "fos_yielding": 3.699149744649547, + "deflection": 0.0016252936401379766, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.217)" + }, + "parent_node_id": "node_77", + "improvement_over_parent": null + }, + "node_79": { + "node_id": "node_79", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.36282139886654, + "fos_buckling": 1.5686977062110157, + "fos_yielding": 4.151803958546927, + "deflection": 0.0014496999434650798, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_78", + "improvement_over_parent": null + }, + "node_80": { + "node_id": "node_80", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_79", + "improvement_over_parent": null + }, + "node_81": { + "node_id": "node_81", + "content": "INITIAL DESIGN (Trace 11)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 186.57 kg\n Factor of Safety: 1.17\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.57297922990236, + "fos_buckling": 1.1738788781554117, + "fos_yielding": 3.7877267553826814, + "deflection": 0.001716886787656436, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_82": { + "node_id": "node_82", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 206.85 kg\n Factor of Safety: 1.28\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.84657484177794, + "fos_buckling": 1.2754839736708625, + "fos_yielding": 4.196871689932594, + "deflection": 0.0015503472922624888, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_81", + "improvement_over_parent": null + }, + "node_83": { + "node_id": "node_83", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 215.46 kg\n Factor of Safety: 1.35\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.4596794565386, + "fos_buckling": 1.3478563270679056, + "fos_yielding": 4.156321109317951, + "deflection": 0.0015334286599461824, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_82", + "improvement_over_parent": null + }, + "node_84": { + "node_id": "node_84", + "content": "MODIFICATION: Increase 10 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0032)]\n\nPerformance:\n Mass: 217.35 kg\n Factor of Safety: 1.35\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.3459423200856, + "fos_buckling": 1.3537025959170963, + "fos_yielding": 4.152462768589269, + "deflection": 0.0015320586894114292, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.247)" + }, + "parent_node_id": "node_83", + "improvement_over_parent": null + }, + "node_85": { + "node_id": "node_85", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_84", + "improvement_over_parent": null + }, + "node_86": { + "node_id": "node_86", + "content": "INITIAL DESIGN (Trace 12)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 133.79 kg\n Factor of Safety: 0.91\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 133.7926620630351, + "fos_buckling": 0.9058565403193586, + "fos_yielding": 2.8001161525824485, + "deflection": 0.002460966995991483, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_87": { + "node_id": "node_87", + "content": "MODIFICATION: Increase 4 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 134.40 kg\n Factor of Safety: 0.91\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.39643487491767, + "fos_buckling": 0.9057403619335295, + "fos_yielding": 2.8001161525824485, + "deflection": 0.00245819819444959, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.183)" + }, + "parent_node_id": "node_86", + "improvement_over_parent": null + }, + "node_88": { + "node_id": "node_88", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 171.23 kg\n Factor of Safety: 1.12\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.22522221959235, + "fos_buckling": 1.124804774742804, + "fos_yielding": 3.563702269584468, + "deflection": 0.0019379261224649932, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_87", + "improvement_over_parent": null + }, + "node_89": { + "node_id": "node_89", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 201.73 kg\n Factor of Safety: 1.30\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.73133028046303, + "fos_buckling": 1.2967907655968511, + "fos_yielding": 4.194850392974868, + "deflection": 0.0016507713457574252, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.195)" + }, + "parent_node_id": "node_88", + "improvement_over_parent": null + }, + "node_90": { + "node_id": "node_90", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 206.91 kg\n Factor of Safety: 1.30\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.9056731571917, + "fos_buckling": 1.2960820685233931, + "fos_yielding": 4.194850392974868, + "deflection": 0.0015713178183871777, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_89", + "improvement_over_parent": null + }, + "node_91": { + "node_id": "node_91", + "content": "MODIFICATION: Increase 7 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 209.52 kg\n Factor of Safety: 1.30\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.52266977660057, + "fos_buckling": 1.2957239298937593, + "fos_yielding": 4.194850392974868, + "deflection": 0.0015675217984773547, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.235)" + }, + "parent_node_id": "node_90", + "improvement_over_parent": null + }, + "node_92": { + "node_id": "node_92", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 218.14 kg\n Factor of Safety: 1.17\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.13577439136122, + "fos_buckling": 1.1725478859905358, + "fos_yielding": 4.128850107949761, + "deflection": 0.0015329073018629452, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_91", + "improvement_over_parent": null + }, + "node_93": { + "node_id": "node_93", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_92", + "improvement_over_parent": null + }, + "node_94": { + "node_id": "node_94", + "content": "INITIAL DESIGN (Trace 13)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 141.87 kg\n Factor of Safety: 0.89\n Max Deflection: 2.32e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.86741337694048, + "fos_buckling": 0.8925843245166069, + "fos_yielding": 2.837523839564824, + "deflection": 0.0023168235270587313, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_95": { + "node_id": "node_95", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 185.00 kg\n Factor of Safety: 1.13\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.99842203434466, + "fos_buckling": 1.1347145276249935, + "fos_yielding": 3.6930541667499726, + "deflection": 0.0017801855973896663, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.328)" + }, + "parent_node_id": "node_94", + "improvement_over_parent": null + }, + "node_96": { + "node_id": "node_96", + "content": "MODIFICATION: Increase 10 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 194.31 kg\n Factor of Safety: 1.40\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.31104041486347, + "fos_buckling": 1.4046844384974462, + "fos_yielding": 3.688197465924362, + "deflection": 0.0016387310098700588, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.353)" + }, + "parent_node_id": "node_95", + "improvement_over_parent": null + }, + "node_97": { + "node_id": "node_97", + "content": "MODIFICATION: Increase 9 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 198.38 kg\n Factor of Safety: 1.42\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.38121873782035, + "fos_buckling": 1.4237503892064793, + "fos_yielding": 3.6902267776956315, + "deflection": 0.0016297055686641596, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.623)" + }, + "parent_node_id": "node_96", + "improvement_over_parent": null + }, + "node_98": { + "node_id": "node_98", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.30 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2956973626087, + "fos_buckling": 1.5685204737831906, + "fos_yielding": 4.151833327202053, + "deflection": 0.001450143823207855, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.138)" + }, + "parent_node_id": "node_97", + "improvement_over_parent": null + }, + "node_99": { + "node_id": "node_99", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_98", + "improvement_over_parent": null + }, + "node_100": { + "node_id": "node_100", + "content": "INITIAL DESIGN (Trace 14)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 142.55 kg\n Factor of Safety: 0.97\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.54684378217434, + "fos_buckling": 0.9738705667930334, + "fos_yielding": 2.781357084091833, + "deflection": 0.002217819007977963, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_101": { + "node_id": "node_101", + "content": "MODIFICATION: Increase 8 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 144.97 kg\n Factor of Safety: 0.97\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.97146341105145, + "fos_buckling": 0.9713360096575705, + "fos_yielding": 2.7812623483523633, + "deflection": 0.002218273204388769, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.555)" + }, + "parent_node_id": "node_100", + "improvement_over_parent": null + }, + "node_102": { + "node_id": "node_102", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 148.45 kg\n Factor of Safety: 1.11\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.4451984453383, + "fos_buckling": 1.1139996634039948, + "fos_yielding": 2.789669819995894, + "deflection": 0.0021555334511609314, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001546)" + }, + "parent_node_id": "node_101", + "improvement_over_parent": null + }, + "node_103": { + "node_id": "node_103", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 185.23 kg\n Factor of Safety: 1.35\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.22653868386735, + "fos_buckling": 1.3475050132005153, + "fos_yielding": 3.478125575120092, + "deflection": 0.0017317181310680964, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.267)" + }, + "parent_node_id": "node_102", + "improvement_over_parent": null + }, + "node_104": { + "node_id": "node_104", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 221.35 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.34714693374403, + "fos_buckling": 1.5606258721168402, + "fos_yielding": 4.153115822535903, + "deflection": 0.0014526041598524144, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.214)" + }, + "parent_node_id": "node_103", + "improvement_over_parent": null + }, + "node_105": { + "node_id": "node_105", + "content": "MODIFICATION: Increase 9 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0069)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 229.47 kg\n Factor of Safety: 1.58\n Max Deflection: 1.39e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 229.47139178290362, + "fos_buckling": 1.5776854841651968, + "fos_yielding": 4.149903869474388, + "deflection": 0.001390002213552628, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.214)" + }, + "parent_node_id": "node_104", + "improvement_over_parent": null + }, + "node_106": { + "node_id": "node_106", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_105", + "improvement_over_parent": null + }, + "node_107": { + "node_id": "node_107", + "content": "INITIAL DESIGN (Trace 15)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n\nPerformance:\n Mass: 72.93 kg\n Factor of Safety: 0.04\n Max Deflection: 2.14e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 72.9262541178466, + "fos_buckling": 0.035876365295663674, + "fos_yielding": 0.6770071366095063, + "deflection": 0.021389156638544897, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_108": { + "node_id": "node_108", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n\nPerformance:\n Mass: 96.67 kg\n Factor of Safety: 0.08\n Max Deflection: 9.82e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 96.67315425589157, + "fos_buckling": 0.07580785819804252, + "fos_yielding": 1.057511509545015, + "deflection": 0.00981787467321089, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003012)" + }, + "parent_node_id": "node_107", + "improvement_over_parent": null + }, + "node_109": { + "node_id": "node_109", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n\nPerformance:\n Mass: 117.95 kg\n Factor of Safety: 0.09\n Max Deflection: 8.05e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.95299924240746, + "fos_buckling": 0.09049878447565698, + "fos_yielding": 1.2917574329693102, + "deflection": 0.008048234850960857, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_108", + "improvement_over_parent": null + }, + "node_110": { + "node_id": "node_110", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 137.24 kg\n Factor of Safety: 0.10\n Max Deflection: 6.92e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.2400451753096, + "fos_buckling": 0.10319836184876367, + "fos_yielding": 1.5046722228998044, + "deflection": 0.00691817395438177, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.175)" + }, + "parent_node_id": "node_109", + "improvement_over_parent": null + }, + "node_111": { + "node_id": "node_111", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 170.21 kg\n Factor of Safety: 1.26\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.212688037115, + "fos_buckling": 1.2555818675617731, + "fos_yielding": 3.209786703387335, + "deflection": 0.0018769004948832576, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004317)" + }, + "parent_node_id": "node_110", + "improvement_over_parent": null + }, + "node_112": { + "node_id": "node_112", + "content": "MODIFICATION: Increase 9 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 180.61 kg\n Factor of Safety: 1.26\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.60895049119526, + "fos_buckling": 1.2591273415019764, + "fos_yielding": 3.22917069746465, + "deflection": 0.0017517849387224012, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.339)" + }, + "parent_node_id": "node_111", + "improvement_over_parent": null + }, + "node_113": { + "node_id": "node_113", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0077)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 233.34 kg\n Factor of Safety: 1.56\n Max Deflection: 1.36e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 233.34295116526852, + "fos_buckling": 1.5601895606591962, + "fos_yielding": 4.175004289303206, + "deflection": 0.001360748436882665, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.323)" + }, + "parent_node_id": "node_112", + "improvement_over_parent": null + }, + "node_114": { + "node_id": "node_114", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_113", + "improvement_over_parent": null + }, + "node_115": { + "node_id": "node_115", + "content": "INITIAL DESIGN (Trace 16)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_116": { + "node_id": "node_116", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 208.49 kg\n Factor of Safety: 1.47\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.49266851232122, + "fos_buckling": 1.4738776106747649, + "fos_yielding": 4.19645566016795, + "deflection": 0.0015206291553599596, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_115", + "improvement_over_parent": null + }, + "node_117": { + "node_id": "node_117", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.11 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.10577312708187, + "fos_buckling": 1.484513484188846, + "fos_yielding": 4.2019652991879495, + "deflection": 0.0015205087814413288, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_116", + "improvement_over_parent": null + }, + "node_118": { + "node_id": "node_118", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2595878653797, + "fos_buckling": 1.5680110398324938, + "fos_yielding": 4.151339310951526, + "deflection": 0.0014504370044323108, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_117", + "improvement_over_parent": null + }, + "node_119": { + "node_id": "node_119", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_118", + "improvement_over_parent": null + }, + "node_120": { + "node_id": "node_120", + "content": "INITIAL DESIGN (Trace 17)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_121": { + "node_id": "node_121", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 114.64 kg\n Factor of Safety: 0.10\n Max Deflection: 2.45e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.64006255980505, + "fos_buckling": 0.09504574716464077, + "fos_yielding": 1.8265436890063236, + "deflection": 24545355872182.37, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002179)" + }, + "parent_node_id": "node_120", + "improvement_over_parent": null + }, + "node_122": { + "node_id": "node_122", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 132.90 kg\n Factor of Safety: 0.00\n Max Deflection: 4.93e+14 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 132.90374834857724, + "fos_buckling": 0.0023680616596663236, + "fos_yielding": 0.034454795189000464, + "deflection": 493070037133082.9, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_121", + "improvement_over_parent": null + }, + "node_123": { + "node_id": "node_123", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 137.24 kg\n Factor of Safety: 0.11\n Max Deflection: 6.02e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.23804067932207, + "fos_buckling": 0.11065265211979168, + "fos_yielding": 1.8059644290816166, + "deflection": 0.0060199602058212355, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001959)" + }, + "parent_node_id": "node_122", + "improvement_over_parent": null + }, + "node_124": { + "node_id": "node_124", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 163.89 kg\n Factor of Safety: 0.13\n Max Deflection: 5.05e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.89296527504317, + "fos_buckling": 0.12804080853559174, + "fos_yielding": 2.15069032857526, + "deflection": 0.005049055776297459, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.212)" + }, + "parent_node_id": "node_123", + "improvement_over_parent": null + }, + "node_125": { + "node_id": "node_125", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 206.54 kg\n Factor of Safety: 1.13\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.54493362641657, + "fos_buckling": 1.1264298038776082, + "fos_yielding": 4.191174168567236, + "deflection": 0.0016727462325907346, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_124", + "improvement_over_parent": null + }, + "node_126": { + "node_id": "node_126", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 210.10 kg\n Factor of Safety: 0.87\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.09934096211458, + "fos_buckling": 0.8733712649464789, + "fos_yielding": 4.105175462354061, + "deflection": 0.0016177094972514691, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_125", + "improvement_over_parent": null + }, + "node_127": { + "node_id": "node_127", + "content": "MODIFICATION: Increase 7 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0045)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 215.16 kg\n Factor of Safety: 0.89\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.16337030431407, + "fos_buckling": 0.8862185954035084, + "fos_yielding": 4.106383782742255, + "deflection": 0.0016132051250114705, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.466)" + }, + "parent_node_id": "node_126", + "improvement_over_parent": null + }, + "node_128": { + "node_id": "node_128", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_127", + "improvement_over_parent": null + }, + "node_129": { + "node_id": "node_129", + "content": "INITIAL DESIGN (Trace 18)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 97.16 kg\n Factor of Safety: 0.04\n Max Deflection: 1.12e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 97.16262942633483, + "fos_buckling": 0.035565057928421885, + "fos_yielding": 0.8030455445776622, + "deflection": 0.011231815460412438, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_130": { + "node_id": "node_130", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 112.99 kg\n Factor of Safety: 0.04\n Max Deflection: 9.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.99071677305146, + "fos_buckling": 0.04070588127787857, + "fos_yielding": 0.9328104265550442, + "deflection": 0.009667062032006462, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.172)" + }, + "parent_node_id": "node_129", + "improvement_over_parent": null + }, + "node_131": { + "node_id": "node_131", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 125.63 kg\n Factor of Safety: 0.04\n Max Deflection: 8.70e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.63461656344859, + "fos_buckling": 0.04468227407140669, + "fos_yielding": 1.0362598880596747, + "deflection": 0.008700369286885027, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_130", + "improvement_over_parent": null + }, + "node_132": { + "node_id": "node_132", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n\nPerformance:\n Mass: 156.12 kg\n Factor of Safety: 1.16\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.12397809680846, + "fos_buckling": 1.1607995877953872, + "fos_yielding": 2.9066216248539987, + "deflection": 0.0020654216809382043, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003921)" + }, + "parent_node_id": "node_131", + "improvement_over_parent": null + }, + "node_133": { + "node_id": "node_133", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 176.34 kg\n Factor of Safety: 1.29\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.34155658807848, + "fos_buckling": 1.2891986563385573, + "fos_yielding": 3.2818330213317957, + "deflection": 0.0018309569372952706, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.139)" + }, + "parent_node_id": "node_132", + "improvement_over_parent": null + }, + "node_134": { + "node_id": "node_134", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24673135030258, + "fos_buckling": 1.5679947270611256, + "fos_yielding": 4.151286288349859, + "deflection": 0.0014505453737671584, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_133", + "improvement_over_parent": null + }, + "node_135": { + "node_id": "node_135", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_134", + "improvement_over_parent": null + }, + "node_136": { + "node_id": "node_136", + "content": "INITIAL DESIGN (Trace 19)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_137": { + "node_id": "node_137", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 199.61 kg\n Factor of Safety: 1.15\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.6143224233216, + "fos_buckling": 1.1473700189783906, + "fos_yielding": 2.8528117879891473, + "deflection": 0.0016239677401975261, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_136", + "improvement_over_parent": null + }, + "node_138": { + "node_id": "node_138", + "content": "MODIFICATION: Increase 0 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 203.30 kg\n Factor of Safety: 1.15\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.30107568070372, + "fos_buckling": 1.1473700189783906, + "fos_yielding": 2.8528117879891473, + "deflection": 0.0015537634698174418, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.284)" + }, + "parent_node_id": "node_137", + "improvement_over_parent": null + }, + "node_139": { + "node_id": "node_139", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 206.86 kg\n Factor of Safety: 1.15\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.85548301640173, + "fos_buckling": 1.1462826283605656, + "fos_yielding": 2.850108108512284, + "deflection": 0.001548299615411143, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_138", + "improvement_over_parent": null + }, + "node_140": { + "node_id": "node_140", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 212.03 kg\n Factor of Safety: 1.15\n Max Deflection: 1.51e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.0298258931304, + "fos_buckling": 1.1505604410485766, + "fos_yielding": 2.8607444283230747, + "deflection": 0.0015054995322143013, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_139", + "improvement_over_parent": null + }, + "node_141": { + "node_id": "node_141", + "content": "MODIFICATION: Increase 4 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0087)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 225.59 kg\n Factor of Safety: 1.13\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 225.59488039387384, + "fos_buckling": 1.1287852737124788, + "fos_yielding": 2.8650863657883714, + "deflection": 0.0015032180007041303, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.517)" + }, + "parent_node_id": "node_140", + "improvement_over_parent": null + }, + "node_142": { + "node_id": "node_142", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_141", + "improvement_over_parent": null + }, + "node_143": { + "node_id": "node_143", + "content": "INITIAL DESIGN (Trace 20)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 109.54 kg\n Factor of Safety: 0.06\n Max Deflection: 8.27e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.53796882648544, + "fos_buckling": 0.05762344478983454, + "fos_yielding": 0.8741337760081824, + "deflection": 0.008271625183063826, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_144": { + "node_id": "node_144", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 115.19 kg\n Factor of Safety: 0.06\n Max Deflection: 8.25e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.18950927064445, + "fos_buckling": 0.05758878818412418, + "fos_yielding": 0.8736080436483119, + "deflection": 0.008253686661934288, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001629)" + }, + "parent_node_id": "node_143", + "improvement_over_parent": null + }, + "node_145": { + "node_id": "node_145", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 143.18 kg\n Factor of Safety: 0.79\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.1752954771443, + "fos_buckling": 0.7852078409538162, + "fos_yielding": 2.727787462096008, + "deflection": 0.0022812762976144375, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003625)" + }, + "parent_node_id": "node_144", + "improvement_over_parent": null + }, + "node_146": { + "node_id": "node_146", + "content": "MODIFICATION: Increase 3 thickness by 66%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 144.47 kg\n Factor of Safety: 1.07\n Max Deflection: 2.27e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.47399547977346, + "fos_buckling": 1.0729761094988124, + "fos_yielding": 2.729044067719788, + "deflection": 0.0022707089392330427, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.656)" + }, + "parent_node_id": "node_145", + "improvement_over_parent": null + }, + "node_147": { + "node_id": "node_147", + "content": "MODIFICATION: Increase 1 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 146.49 kg\n Factor of Safety: 1.10\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.48544778809548, + "fos_buckling": 1.0978121653883968, + "fos_yielding": 2.7273569354095746, + "deflection": 0.00219981524909349, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.224)" + }, + "parent_node_id": "node_146", + "improvement_over_parent": null + }, + "node_148": { + "node_id": "node_148", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 163.92 kg\n Factor of Safety: 1.21\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.91754165782191, + "fos_buckling": 1.2108616742473033, + "fos_yielding": 3.050969084991949, + "deflection": 0.00196804009362142, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_147", + "improvement_over_parent": null + }, + "node_149": { + "node_id": "node_149", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 191.36 kg\n Factor of Safety: 1.38\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.36426667813774, + "fos_buckling": 1.3813631556055685, + "fos_yielding": 3.56008667632293, + "deflection": 0.0016886947619570319, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_148", + "improvement_over_parent": null + }, + "node_150": { + "node_id": "node_150", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.07 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.0731518594644, + "fos_buckling": 1.5669830234881013, + "fos_yielding": 4.147644360445109, + "deflection": 0.0014515520067817616, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.182)" + }, + "parent_node_id": "node_149", + "improvement_over_parent": null + }, + "node_151": { + "node_id": "node_151", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_150", + "improvement_over_parent": null + }, + "node_152": { + "node_id": "node_152", + "content": "INITIAL DESIGN (Trace 21)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 156.96 kg\n Factor of Safety: 1.17\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.963012072139, + "fos_buckling": 1.1701679172660777, + "fos_yielding": 2.9557730352576277, + "deflection": 0.00203632191085489, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_153": { + "node_id": "node_153", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 185.93 kg\n Factor of Safety: 1.35\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.9303952764677, + "fos_buckling": 1.3524197909503475, + "fos_yielding": 3.4989998555150876, + "deflection": 0.0017224030162787533, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_152", + "improvement_over_parent": null + }, + "node_154": { + "node_id": "node_154", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.67 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.6701520930991, + "fos_buckling": 1.557349228637603, + "fos_yielding": 4.149516580983777, + "deflection": 0.0014546258754820041, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.205)" + }, + "parent_node_id": "node_153", + "improvement_over_parent": null + }, + "node_155": { + "node_id": "node_155", + "content": "MODIFICATION: Increase 9 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21977569980731, + "fos_buckling": 1.567789596366779, + "fos_yielding": 4.150625049905391, + "deflection": 0.0014506877607944233, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.280)" + }, + "parent_node_id": "node_154", + "improvement_over_parent": null + }, + "node_156": { + "node_id": "node_156", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_155", + "improvement_over_parent": null + }, + "node_157": { + "node_id": "node_157", + "content": "INITIAL DESIGN (Trace 22)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 101.22 kg\n Factor of Safety: 0.05\n Max Deflection: 2.50e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 101.2206627691878, + "fos_buckling": 0.04607662042709476, + "fos_yielding": 1.08126794842885, + "deflection": 25016948614797.11, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_158": { + "node_id": "node_158", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n\nPerformance:\n Mass: 104.24 kg\n Factor of Safety: 0.05\n Max Deflection: 1.49e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 104.23731051010702, + "fos_buckling": 0.048616130165514325, + "fos_yielding": 0.9544751251305711, + "deflection": 0.014891857901392481, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001332)" + }, + "parent_node_id": "node_157", + "improvement_over_parent": null + }, + "node_159": { + "node_id": "node_159", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 136.99 kg\n Factor of Safety: 0.05\n Max Deflection: 7.93e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.98899240762415, + "fos_buckling": 0.048446956251834, + "fos_yielding": 1.1368919966022286, + "deflection": 0.007929861451528493, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004286)" + }, + "parent_node_id": "node_158", + "improvement_over_parent": null + }, + "node_160": { + "node_id": "node_160", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n\nPerformance:\n Mass: 170.47 kg\n Factor of Safety: 1.21\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.46957029486614, + "fos_buckling": 1.211355716718148, + "fos_yielding": 3.1898100341352764, + "deflection": 0.0018866529584940534, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004333)" + }, + "parent_node_id": "node_159", + "improvement_over_parent": null + }, + "node_161": { + "node_id": "node_161", + "content": "MODIFICATION: Increase 3 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0062)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n\nPerformance:\n Mass: 178.77 kg\n Factor of Safety: 0.85\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.77464685097038, + "fos_buckling": 0.847999557526527, + "fos_yielding": 3.7005621784574934, + "deflection": 0.001868640499609176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.339)" + }, + "parent_node_id": "node_160", + "improvement_over_parent": null + }, + "node_162": { + "node_id": "node_162", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0082)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 232.49 kg\n Factor of Safety: 1.06\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 232.49020756832613, + "fos_buckling": 1.05687013799375, + "fos_yielding": 4.813209824564108, + "deflection": 0.0014397220851587132, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.332)" + }, + "parent_node_id": "node_161", + "improvement_over_parent": null + }, + "node_163": { + "node_id": "node_163", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_162", + "improvement_over_parent": null + }, + "node_164": { + "node_id": "node_164", + "content": "INITIAL DESIGN (Trace 23)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 170.42 kg\n Factor of Safety: 1.11\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.41887159009377, + "fos_buckling": 1.109194379536531, + "fos_yielding": 2.741896422426018, + "deflection": 0.001956303533957387, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_165": { + "node_id": "node_165", + "content": "MODIFICATION: Increase 1 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 174.89 kg\n Factor of Safety: 1.10\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.89386655105392, + "fos_buckling": 1.1042788494035798, + "fos_yielding": 2.7297453741205815, + "deflection": 0.001814603636196637, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.473)" + }, + "parent_node_id": "node_164", + "improvement_over_parent": null + }, + "node_166": { + "node_id": "node_166", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.24 kg\n Factor of Safety: 1.30\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.2422464522902, + "fos_buckling": 1.2957777513933297, + "fos_yielding": 3.275006441111739, + "deflection": 0.001520044571089943, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_165", + "improvement_over_parent": null + }, + "node_167": { + "node_id": "node_167", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 213.22 kg\n Factor of Safety: 1.29\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.22243766442645, + "fos_buckling": 1.2854743597732956, + "fos_yielding": 3.248965189913666, + "deflection": 0.0014739943071701944, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001605)" + }, + "parent_node_id": "node_166", + "improvement_over_parent": null + }, + "node_168": { + "node_id": "node_168", + "content": "MODIFICATION: Increase 5 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0091)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 228.76 kg\n Factor of Safety: 1.22\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.7566723449024, + "fos_buckling": 1.221775073323419, + "fos_yielding": 3.2561322726506274, + "deflection": 0.001453958798091753, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.597)" + }, + "parent_node_id": "node_167", + "improvement_over_parent": null + }, + "node_169": { + "node_id": "node_169", + "content": "MODIFICATION: Increase 4 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0091)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 236.65 kg\n Factor of Safety: 1.07\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 236.6465292947614, + "fos_buckling": 1.067061768664593, + "fos_yielding": 4.16768346825616, + "deflection": 0.0014398949246713668, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.319)" + }, + "parent_node_id": "node_168", + "improvement_over_parent": null + }, + "node_170": { + "node_id": "node_170", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_169", + "improvement_over_parent": null + }, + "node_171": { + "node_id": "node_171", + "content": "INITIAL DESIGN (Trace 24)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 137.53 kg\n Factor of Safety: 1.04\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.5264979836909, + "fos_buckling": 1.0442727407947192, + "fos_yielding": 2.81725660010272, + "deflection": 0.0022545137456469674, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_172": { + "node_id": "node_172", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 159.59 kg\n Factor of Safety: 1.19\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.58905211400648, + "fos_buckling": 1.1876530100470937, + "fos_yielding": 3.2671710617245244, + "deflection": 0.0019449680089414219, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.172)" + }, + "parent_node_id": "node_171", + "improvement_over_parent": null + }, + "node_173": { + "node_id": "node_173", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 169.38 kg\n Factor of Safety: 1.21\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.38421203809764, + "fos_buckling": 1.2065696449591738, + "fos_yielding": 3.281530923476989, + "deflection": 0.0019446281565254006, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002366)" + }, + "parent_node_id": "node_172", + "improvement_over_parent": null + }, + "node_174": { + "node_id": "node_174", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 190.18 kg\n Factor of Safety: 1.33\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.17726940882042, + "fos_buckling": 1.3309849671546636, + "fos_yielding": 3.682754489862619, + "deflection": 0.0017336872423415483, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.133)" + }, + "parent_node_id": "node_173", + "improvement_over_parent": null + }, + "node_175": { + "node_id": "node_175", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 217.18 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.17947122001445, + "fos_buckling": 1.484890466817076, + "fos_yielding": 4.203268068162737, + "deflection": 0.0015200407009791064, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_174", + "improvement_over_parent": null + }, + "node_176": { + "node_id": "node_176", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33328595831227, + "fos_buckling": 1.568420440767268, + "fos_yielding": 4.152633891493353, + "deflection": 0.0014499900952900618, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_175", + "improvement_over_parent": null + }, + "node_177": { + "node_id": "node_177", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_176", + "improvement_over_parent": null + }, + "node_178": { + "node_id": "node_178", + "content": "INITIAL DESIGN (Trace 25)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 158.75 kg\n Factor of Safety: 0.58\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.74940352160894, + "fos_buckling": 0.5800500272512247, + "fos_yielding": 3.146958738706324, + "deflection": 0.00219167921095778, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_179": { + "node_id": "node_179", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 206.73 kg\n Factor of Safety: 0.73\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.73276703929335, + "fos_buckling": 0.7264451463170347, + "fos_yielding": 4.090701169903916, + "deflection": 0.001684413999453184, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.330)" + }, + "parent_node_id": "node_178", + "improvement_over_parent": null + }, + "node_180": { + "node_id": "node_180", + "content": "MODIFICATION: Increase 7 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 211.77 kg\n Factor of Safety: 0.95\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.76915460311827, + "fos_buckling": 0.9505665278576672, + "fos_yielding": 4.114272872439257, + "deflection": 0.0015903382567690149, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.198)" + }, + "parent_node_id": "node_179", + "improvement_over_parent": null + }, + "node_181": { + "node_id": "node_181", + "content": "MODIFICATION: Increase 7 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1802181385053, + "fos_buckling": 1.56753434228501, + "fos_yielding": 4.149792509159378, + "deflection": 0.0014509250067525447, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.389)" + }, + "parent_node_id": "node_180", + "improvement_over_parent": null + }, + "node_182": { + "node_id": "node_182", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_181", + "improvement_over_parent": null + }, + "node_183": { + "node_id": "node_183", + "content": "INITIAL DESIGN (Trace 26)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 151.60 kg\n Factor of Safety: 0.85\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.6020622105507, + "fos_buckling": 0.8512965740557547, + "fos_yielding": 3.33085064601222, + "deflection": 0.0022886627588904426, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_184": { + "node_id": "node_184", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 191.40 kg\n Factor of Safety: 1.05\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.40365986738192, + "fos_buckling": 1.0530047005115393, + "fos_yielding": 4.193198435237609, + "deflection": 0.0018138407156039116, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.285)" + }, + "parent_node_id": "node_183", + "improvement_over_parent": null + }, + "node_185": { + "node_id": "node_185", + "content": "MODIFICATION: Increase 6 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 206.75 kg\n Factor of Safety: 1.36\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.7474045379447, + "fos_buckling": 1.3596985461608182, + "fos_yielding": 4.193198435237609, + "deflection": 0.0015577920025081908, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.595)" + }, + "parent_node_id": "node_184", + "improvement_over_parent": null + }, + "node_186": { + "node_id": "node_186", + "content": "MODIFICATION: Increase 9 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.81 kg\n Factor of Safety: 1.52\n Max Deflection: 1.48e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 213.8094373670658, + "fos_buckling": 1.5239030080440088, + "fos_yielding": 4.193198435237609, + "deflection": 0.0014818852645674637, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.218)" + }, + "parent_node_id": "node_185", + "improvement_over_parent": null + }, + "node_187": { + "node_id": "node_187", + "content": "MODIFICATION: Increase 4 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.40 kg\n Factor of Safety: 1.52\n Max Deflection: 1.48e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 215.40136077703795, + "fos_buckling": 1.52339102563082, + "fos_yielding": 4.193198435237611, + "deflection": 0.0014800527612499968, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.383)" + }, + "parent_node_id": "node_186", + "improvement_over_parent": null + }, + "node_188": { + "node_id": "node_188", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 218.96 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 218.95576811273597, + "fos_buckling": 1.5485303514409032, + "fos_yielding": 4.14745615978478, + "deflection": 0.0014580218659460014, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_187", + "improvement_over_parent": null + }, + "node_189": { + "node_id": "node_189", + "content": "MODIFICATION: Increase 9 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0089)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 239.45 kg\n Factor of Safety: 1.47\n Max Deflection: 1.33e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 239.44797742496857, + "fos_buckling": 1.4735198502018694, + "fos_yielding": 4.141395603459489, + "deflection": 0.0013262820878902622, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.560)" + }, + "parent_node_id": "node_188", + "improvement_over_parent": null + }, + "node_190": { + "node_id": "node_190", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_189", + "improvement_over_parent": null + }, + "node_191": { + "node_id": "node_191", + "content": "INITIAL DESIGN (Trace 27)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 151.31 kg\n Factor of Safety: 1.10\n Max Deflection: 2.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.31230805479694, + "fos_buckling": 1.1003994261561068, + "fos_yielding": 2.970243734008317, + "deflection": 0.0022289972244888216, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_192": { + "node_id": "node_192", + "content": "MODIFICATION: Increase 0 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 153.59 kg\n Factor of Safety: 1.11\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.59274456088622, + "fos_buckling": 1.1086577541012395, + "fos_yielding": 2.9766133102427097, + "deflection": 0.0021428622944465875, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.233)" + }, + "parent_node_id": "node_191", + "improvement_over_parent": null + }, + "node_193": { + "node_id": "node_193", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 157.95 kg\n Factor of Safety: 1.17\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.9457192332642, + "fos_buckling": 1.1725098442584945, + "fos_yielding": 2.94026730462229, + "deflection": 0.002041743573751903, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001765)" + }, + "parent_node_id": "node_192", + "improvement_over_parent": null + }, + "node_194": { + "node_id": "node_194", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 179.11 kg\n Factor of Safety: 1.31\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.10754614113768, + "fos_buckling": 1.306310146898486, + "fos_yielding": 3.332949035184237, + "deflection": 0.0018029166329116056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_193", + "improvement_over_parent": null + }, + "node_195": { + "node_id": "node_195", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.315742419757, + "fos_buckling": 1.5683091686512902, + "fos_yielding": 4.152325456663593, + "deflection": 0.0014500412067102347, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.271)" + }, + "parent_node_id": "node_194", + "improvement_over_parent": null + }, + "node_196": { + "node_id": "node_196", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_195", + "improvement_over_parent": null + }, + "node_197": { + "node_id": "node_197", + "content": "INITIAL DESIGN (Trace 28)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 98.04 kg\n Factor of Safety: 0.15\n Max Deflection: 8.10e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 98.04397199230051, + "fos_buckling": 0.15195114596900786, + "fos_yielding": 2.157770603710114, + "deflection": 8096162437713.429, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_198": { + "node_id": "node_198", + "content": "MODIFICATION: Increase 2 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 99.00 kg\n Factor of Safety: 0.32\n Max Deflection: 8.37e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 99.00136191562528, + "fos_buckling": 0.3177247691941259, + "fos_yielding": 2.1625358968577, + "deflection": 8372245682380.596, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.515)" + }, + "parent_node_id": "node_197", + "improvement_over_parent": null + }, + "node_199": { + "node_id": "node_199", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 117.31 kg\n Factor of Safety: 0.02\n Max Deflection: 1.09e+14 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.31288887002232, + "fos_buckling": 0.017062240490198635, + "fos_yielding": 0.19259297203328307, + "deflection": 108525591120051.7, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.196)" + }, + "parent_node_id": "node_198", + "improvement_over_parent": null + }, + "node_200": { + "node_id": "node_200", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n\nPerformance:\n Mass: 146.37 kg\n Factor of Safety: 1.08\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.36506209267236, + "fos_buckling": 1.0813762557045605, + "fos_yielding": 2.797394933788099, + "deflection": 0.0021964968749399686, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003725)" + }, + "parent_node_id": "node_199", + "improvement_over_parent": null + }, + "node_201": { + "node_id": "node_201", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n\nPerformance:\n Mass: 184.63 kg\n Factor of Safety: 1.32\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.63237730586604, + "fos_buckling": 1.3197777962502475, + "fos_yielding": 3.5270712690227746, + "deflection": 0.0017457900891787068, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.282)" + }, + "parent_node_id": "node_200", + "improvement_over_parent": null + }, + "node_202": { + "node_id": "node_202", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 219.77 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.76563810004603, + "fos_buckling": 1.5227498828662616, + "fos_yielding": 4.196366897820882, + "deflection": 0.0014702009117906264, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_201", + "improvement_over_parent": null + }, + "node_203": { + "node_id": "node_203", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32004543574405, + "fos_buckling": 1.5683711124631798, + "fos_yielding": 4.152589759937863, + "deflection": 0.0014500206933364182, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_202", + "improvement_over_parent": null + }, + "node_204": { + "node_id": "node_204", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_203", + "improvement_over_parent": null + }, + "node_205": { + "node_id": "node_205", + "content": "INITIAL DESIGN (Trace 29)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 93.76 kg\n Factor of Safety: 0.04\n Max Deflection: 1.34e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 93.75616958118151, + "fos_buckling": 0.03831073145258824, + "fos_yielding": 0.5512767230240073, + "deflection": 13422998052832.13, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_206": { + "node_id": "node_206", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 127.50 kg\n Factor of Safety: 0.31\n Max Deflection: 3.62e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.50339896817574, + "fos_buckling": 0.3064858516207059, + "fos_yielding": 2.0321236844367867, + "deflection": 3620266210886.473, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004370)" + }, + "parent_node_id": "node_205", + "improvement_over_parent": null + }, + "node_207": { + "node_id": "node_207", + "content": "MODIFICATION: Increase 5 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 135.75 kg\n Factor of Safety: 0.20\n Max Deflection: 3.62e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.74834098503197, + "fos_buckling": 0.2043239010804706, + "fos_yielding": 2.9401425227947056, + "deflection": 3620266210886.474, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.577)" + }, + "parent_node_id": "node_206", + "improvement_over_parent": null + }, + "node_208": { + "node_id": "node_208", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 160.54 kg\n Factor of Safety: 0.91\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.54098043589067, + "fos_buckling": 0.9148612375692587, + "fos_yielding": 3.20506440762434, + "deflection": 0.0021339381956980356, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003190)" + }, + "parent_node_id": "node_207", + "improvement_over_parent": null + }, + "node_209": { + "node_id": "node_209", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 207.68 kg\n Factor of Safety: 1.15\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.68495719741412, + "fos_buckling": 1.1506531354165397, + "fos_yielding": 4.138500168737847, + "deflection": 0.0016525210240664258, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.321)" + }, + "parent_node_id": "node_208", + "improvement_over_parent": null + }, + "node_210": { + "node_id": "node_210", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 212.86 kg\n Factor of Safety: 1.22\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.8593000741428, + "fos_buckling": 1.2230832356590389, + "fos_yielding": 4.158545283572584, + "deflection": 0.00156869182450054, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_209", + "improvement_over_parent": null + }, + "node_211": { + "node_id": "node_211", + "content": "MODIFICATION: Increase 10 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0032)]\n\nPerformance:\n Mass: 214.47 kg\n Factor of Safety: 1.29\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.46990281708906, + "fos_buckling": 1.2917025090189531, + "fos_yielding": 4.159614509663155, + "deflection": 0.0015643680094866502, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.355)" + }, + "parent_node_id": "node_210", + "improvement_over_parent": null + }, + "node_212": { + "node_id": "node_212", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_211", + "improvement_over_parent": null + }, + "node_213": { + "node_id": "node_213", + "content": "INITIAL DESIGN (Trace 30)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 175.20 kg\n Factor of Safety: 0.06\n Max Deflection: 6.76e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.1961596077193, + "fos_buckling": 0.06040319753924834, + "fos_yielding": 1.402342713762121, + "deflection": 0.006764337569674814, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_214": { + "node_id": "node_214", + "content": "MODIFICATION: Increase 1 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 177.92 kg\n Factor of Safety: 0.06\n Max Deflection: 6.71e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.92138813365605, + "fos_buckling": 0.060385758168847795, + "fos_yielding": 1.401937834964141, + "deflection": 0.006706430114613093, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.202)" + }, + "parent_node_id": "node_213", + "improvement_over_parent": null + }, + "node_215": { + "node_id": "node_215", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 221.53 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.53244237641675, + "fos_buckling": 1.5693164185740807, + "fos_yielding": 4.156117218474454, + "deflection": 0.0014523470357460256, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_214", + "improvement_over_parent": null + }, + "node_216": { + "node_id": "node_216", + "content": "MODIFICATION: Increase 8 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0040)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 224.59 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 224.59411240112928, + "fos_buckling": 1.5687963738509683, + "fos_yielding": 4.157009231213783, + "deflection": 0.0014487304544399068, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.276)" + }, + "parent_node_id": "node_215", + "improvement_over_parent": null + }, + "node_217": { + "node_id": "node_217", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_216", + "improvement_over_parent": null + }, + "node_218": { + "node_id": "node_218", + "content": "INITIAL DESIGN (Trace 31)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 126.52 kg\n Factor of Safety: 0.97\n Max Deflection: 2.54e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.51553716564692, + "fos_buckling": 0.966511315373509, + "fos_yielding": 2.3643327153304217, + "deflection": 0.0025386838891888765, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_219": { + "node_id": "node_219", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 165.63 kg\n Factor of Safety: 1.23\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.62672986826072, + "fos_buckling": 1.2251083465550032, + "fos_yielding": 3.0929759561055903, + "deflection": 0.0019440686406985875, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.330)" + }, + "parent_node_id": "node_218", + "improvement_over_parent": null + }, + "node_220": { + "node_id": "node_220", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 189.55 kg\n Factor of Safety: 1.37\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.54649905730994, + "fos_buckling": 1.3740181395153719, + "fos_yielding": 3.5380692805536187, + "deflection": 0.0017013420902730536, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_219", + "improvement_over_parent": null + }, + "node_221": { + "node_id": "node_221", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.69 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.68661104889418, + "fos_buckling": 1.5688036557299017, + "fos_yielding": 4.154059981274667, + "deflection": 0.0014512226913697861, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_220", + "improvement_over_parent": null + }, + "node_222": { + "node_id": "node_222", + "content": "MODIFICATION: Increase 2 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28202509812485, + "fos_buckling": 1.5681498075109341, + "fos_yielding": 4.15180174254123, + "deflection": 0.001450283670785474, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.221)" + }, + "parent_node_id": "node_221", + "improvement_over_parent": null + }, + "node_223": { + "node_id": "node_223", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_222", + "improvement_over_parent": null + }, + "node_224": { + "node_id": "node_224", + "content": "INITIAL DESIGN (Trace 32)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 160.79 kg\n Factor of Safety: 0.04\n Max Deflection: 1.48e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.78686948916103, + "fos_buckling": 0.03933293467682539, + "fos_yielding": 1.08126794842885, + "deflection": 14813119723931.18, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_225": { + "node_id": "node_225", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 203.44 kg\n Factor of Safety: 0.71\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.43883784053443, + "fos_buckling": 0.7114887930030753, + "fos_yielding": 4.09012401017341, + "deflection": 0.0016855211008179325, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_224", + "improvement_over_parent": null + }, + "node_226": { + "node_id": "node_226", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 208.61 kg\n Factor of Safety: 0.80\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.6131807172631, + "fos_buckling": 0.8006975343522299, + "fos_yielding": 4.101458924222598, + "deflection": 0.001646868434142313, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_225", + "improvement_over_parent": null + }, + "node_227": { + "node_id": "node_227", + "content": "MODIFICATION: Increase 7 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0040)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 212.72 kg\n Factor of Safety: 0.69\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.7174676352443, + "fos_buckling": 0.6894113390205258, + "fos_yielding": 4.085839962002863, + "deflection": 0.0016371904056221391, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.555)" + }, + "parent_node_id": "node_226", + "improvement_over_parent": null + }, + "node_228": { + "node_id": "node_228", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_227", + "improvement_over_parent": null + }, + "node_229": { + "node_id": "node_229", + "content": "INITIAL DESIGN (Trace 33)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_230": { + "node_id": "node_230", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 152.00 kg\n Factor of Safety: 1.02\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.99577197290392, + "fos_buckling": 1.0150645049701723, + "fos_yielding": 3.309903494711565, + "deflection": 0.0021097397353377254, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001521)" + }, + "parent_node_id": "node_229", + "improvement_over_parent": null + }, + "node_231": { + "node_id": "node_231", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 193.01 kg\n Factor of Safety: 1.25\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.00856771262843, + "fos_buckling": 1.2531123261196633, + "fos_yielding": 4.197161856899782, + "deflection": 0.0016681880630325008, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_230", + "improvement_over_parent": null + }, + "node_232": { + "node_id": "node_232", + "content": "MODIFICATION: Increase 7 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 203.93 kg\n Factor of Safety: 1.25\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.9281728670099, + "fos_buckling": 1.2516666519698205, + "fos_yielding": 4.197161856899782, + "deflection": 0.0015706885191035845, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.290)" + }, + "parent_node_id": "node_231", + "improvement_over_parent": null + }, + "node_233": { + "node_id": "node_233", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 212.54 kg\n Factor of Safety: 0.91\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.54127748177055, + "fos_buckling": 0.9123504815370491, + "fos_yielding": 4.113265666264969, + "deflection": 0.0014984258729473239, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_232", + "improvement_over_parent": null + }, + "node_234": { + "node_id": "node_234", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 225.09 kg\n Factor of Safety: 1.01\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 225.0896351018668, + "fos_buckling": 1.0094356529779465, + "fos_yielding": 4.120975579404102, + "deflection": 0.001475489331327103, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_233", + "improvement_over_parent": null + }, + "node_235": { + "node_id": "node_235", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_234", + "improvement_over_parent": null + }, + "node_236": { + "node_id": "node_236", + "content": "INITIAL DESIGN (Trace 34)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 113.40 kg\n Factor of Safety: 0.89\n Max Deflection: 2.95e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.39852143164545, + "fos_buckling": 0.8886496800604268, + "fos_yielding": 2.2430428280257004, + "deflection": 0.002948096508258669, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_237": { + "node_id": "node_237", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 148.67 kg\n Factor of Safety: 1.13\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.66631401073562, + "fos_buckling": 1.129375571979705, + "fos_yielding": 2.9380835679918342, + "deflection": 0.002252560577902445, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.330)" + }, + "parent_node_id": "node_236", + "improvement_over_parent": null + }, + "node_238": { + "node_id": "node_238", + "content": "MODIFICATION: Increase 0 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 152.18 kg\n Factor of Safety: 1.13\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.18305070773607, + "fos_buckling": 1.128954446845103, + "fos_yielding": 2.938083567991834, + "deflection": 0.002098459788456089, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.414)" + }, + "parent_node_id": "node_237", + "improvement_over_parent": null + }, + "node_239": { + "node_id": "node_239", + "content": "MODIFICATION: Increase 8 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 153.74 kg\n Factor of Safety: 1.13\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.74031155225026, + "fos_buckling": 1.128768066977787, + "fos_yielding": 2.9380835679918347, + "deflection": 0.0020924307684957364, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.229)" + }, + "parent_node_id": "node_238", + "improvement_over_parent": null + }, + "node_240": { + "node_id": "node_240", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 180.72 kg\n Factor of Safety: 1.30\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.7219341266262, + "fos_buckling": 1.2962851150751686, + "fos_yielding": 3.4525435566235494, + "deflection": 0.00178330340614678, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.189)" + }, + "parent_node_id": "node_239", + "improvement_over_parent": null + }, + "node_241": { + "node_id": "node_241", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.56 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.5640150957153, + "fos_buckling": 1.5216739388777134, + "fos_yielding": 4.192531751208727, + "deflection": 0.0014717024804133444, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.236)" + }, + "parent_node_id": "node_240", + "improvement_over_parent": null + }, + "node_242": { + "node_id": "node_242", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1184224314133, + "fos_buckling": 1.5672494044640515, + "fos_yielding": 4.148750991911163, + "deflection": 0.0014514779024067228, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_241", + "improvement_over_parent": null + }, + "node_243": { + "node_id": "node_243", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_242", + "improvement_over_parent": null + }, + "node_244": { + "node_id": "node_244", + "content": "INITIAL DESIGN (Trace 35)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0005)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 110.49 kg\n Factor of Safety: 0.02\n Max Deflection: 1.22e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.48936705032436, + "fos_buckling": 0.020281935236983385, + "fos_yielding": 0.44006192885148204, + "deflection": 0.012241550575375319, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_245": { + "node_id": "node_245", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0005)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n\nPerformance:\n Mass: 137.59 kg\n Factor of Safety: 0.78\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.59128274088846, + "fos_buckling": 0.7824368287053476, + "fos_yielding": 2.5895789767150865, + "deflection": 0.002328314016505655, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003461)" + }, + "parent_node_id": "node_244", + "improvement_over_parent": null + }, + "node_246": { + "node_id": "node_246", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 180.08 kg\n Factor of Safety: 0.99\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.08465594145966, + "fos_buckling": 0.9943173610859238, + "fos_yielding": 3.3865993819469287, + "deflection": 0.0017838248235806347, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.332)" + }, + "parent_node_id": "node_245", + "improvement_over_parent": null + }, + "node_247": { + "node_id": "node_247", + "content": "MODIFICATION: Increase 2 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 180.67 kg\n Factor of Safety: 1.20\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.6683844049135, + "fos_buckling": 1.202800558045845, + "fos_yielding": 3.3827092116931965, + "deflection": 0.0017811625048677285, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.439)" + }, + "parent_node_id": "node_246", + "improvement_over_parent": null + }, + "node_248": { + "node_id": "node_248", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 222.15 kg\n Factor of Safety: 1.43\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.14773132123736, + "fos_buckling": 1.4253180223586341, + "fos_yielding": 4.1560089552659365, + "deflection": 0.0014524629876610255, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.252)" + }, + "parent_node_id": "node_247", + "improvement_over_parent": null + }, + "node_249": { + "node_id": "node_249", + "content": "MODIFICATION: Increase 2 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25638395512772, + "fos_buckling": 1.5679842877889958, + "fos_yielding": 4.151261388689659, + "deflection": 0.001450450426054382, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.497)" + }, + "parent_node_id": "node_248", + "improvement_over_parent": null + }, + "node_250": { + "node_id": "node_250", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_249", + "improvement_over_parent": null + }, + "node_251": { + "node_id": "node_251", + "content": "INITIAL DESIGN (Trace 36)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 129.58 kg\n Factor of Safety: 0.83\n Max Deflection: 4.33e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.5810932888723, + "fos_buckling": 0.8259641861100505, + "fos_yielding": 0.993062897442376, + "deflection": 43274671426896.914, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_252": { + "node_id": "node_252", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 134.42 kg\n Factor of Safety: 0.04\n Max Deflection: 5.83e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.41674402933543, + "fos_buckling": 0.03823338638958922, + "fos_yielding": 0.5512767230240074, + "deflection": 58329840245283.8, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001975)" + }, + "parent_node_id": "node_251", + "improvement_over_parent": null + }, + "node_253": { + "node_id": "node_253", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 168.69 kg\n Factor of Safety: 1.25\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.68911394878478, + "fos_buckling": 1.2476924117313473, + "fos_yielding": 3.299687191411502, + "deflection": 0.0018648306091731655, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004443)" + }, + "parent_node_id": "node_252", + "improvement_over_parent": null + }, + "node_254": { + "node_id": "node_254", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 175.46 kg\n Factor of Safety: 1.28\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.45652260925135, + "fos_buckling": 1.283638640036834, + "fos_yielding": 3.2652921897251694, + "deflection": 0.0018400374307888042, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001974)" + }, + "parent_node_id": "node_253", + "improvement_over_parent": null + }, + "node_255": { + "node_id": "node_255", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24683582645596, + "fos_buckling": 1.567946447202713, + "fos_yielding": 4.151137440339119, + "deflection": 0.0014505046130601795, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.299)" + }, + "parent_node_id": "node_254", + "improvement_over_parent": null + }, + "node_256": { + "node_id": "node_256", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_255", + "improvement_over_parent": null + }, + "node_257": { + "node_id": "node_257", + "content": "INITIAL DESIGN (Trace 37)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 142.86 kg\n Factor of Safety: 0.05\n Max Deflection: 1.17e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.85730968460553, + "fos_buckling": 0.05109914422784399, + "fos_yielding": 1.2248212909567948, + "deflection": 0.01174053891299182, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_258": { + "node_id": "node_258", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 177.78 kg\n Factor of Safety: 1.26\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.78007523742127, + "fos_buckling": 1.2574223373950675, + "fos_yielding": 3.443732262599712, + "deflection": 0.0018534745739166546, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004592)" + }, + "parent_node_id": "node_257", + "improvement_over_parent": null + }, + "node_259": { + "node_id": "node_259", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 182.82 kg\n Factor of Safety: 1.33\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.8180275371246, + "fos_buckling": 1.329202099327953, + "fos_yielding": 3.401892562289549, + "deflection": 0.0017667850045496453, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002064)" + }, + "parent_node_id": "node_258", + "improvement_over_parent": null + }, + "node_260": { + "node_id": "node_260", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.11 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.11109786065026, + "fos_buckling": 1.5671455318389007, + "fos_yielding": 4.14868072333738, + "deflection": 0.0014513900481721935, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.242)" + }, + "parent_node_id": "node_259", + "improvement_over_parent": null + }, + "node_261": { + "node_id": "node_261", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_260", + "improvement_over_parent": null + }, + "node_262": { + "node_id": "node_262", + "content": "INITIAL DESIGN (Trace 38)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 145.78 kg\n Factor of Safety: 0.82\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.78400247038098, + "fos_buckling": 0.8162798458202802, + "fos_yielding": 2.996811976122129, + "deflection": 0.002454494385010965, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_263": { + "node_id": "node_263", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n\nPerformance:\n Mass: 149.53 kg\n Factor of Safety: 0.76\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.52748764524603, + "fos_buckling": 0.7560078024251653, + "fos_yielding": 3.0147231758648285, + "deflection": 0.0022884160968334915, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001674)" + }, + "parent_node_id": "node_262", + "improvement_over_parent": null + }, + "node_264": { + "node_id": "node_264", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 167.27 kg\n Factor of Safety: 0.83\n Max Deflection: 2.05e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.2670420127412, + "fos_buckling": 0.8332386760706634, + "fos_yielding": 3.369490234754408, + "deflection": 0.002046826797212435, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_263", + "improvement_over_parent": null + }, + "node_265": { + "node_id": "node_265", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 206.97 kg\n Factor of Safety: 1.00\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.97088272169793, + "fos_buckling": 0.9969511943981513, + "fos_yielding": 4.161045582172919, + "deflection": 0.0016560899371141338, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.259)" + }, + "parent_node_id": "node_264", + "improvement_over_parent": null + }, + "node_266": { + "node_id": "node_266", + "content": "MODIFICATION: Increase 1 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 210.98 kg\n Factor of Safety: 1.14\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.9782681057482, + "fos_buckling": 1.1404751546357912, + "fos_yielding": 4.157684331580001, + "deflection": 0.0015967206460713473, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.325)" + }, + "parent_node_id": "node_265", + "improvement_over_parent": null + }, + "node_267": { + "node_id": "node_267", + "content": "MODIFICATION: Increase 10 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0034)]\n\nPerformance:\n Mass: 212.95 kg\n Factor of Safety: 1.24\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.95214502511996, + "fos_buckling": 1.2354817660690682, + "fos_yielding": 4.1590190315397395, + "deflection": 0.0015910594550470139, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.439)" + }, + "parent_node_id": "node_266", + "improvement_over_parent": null + }, + "node_268": { + "node_id": "node_268", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_267", + "improvement_over_parent": null + }, + "node_269": { + "node_id": "node_269", + "content": "INITIAL DESIGN (Trace 39)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 141.75 kg\n Factor of Safety: 0.74\n Max Deflection: 2.26e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.7516396883546, + "fos_buckling": 0.7398063920921428, + "fos_yielding": 2.9466016248894995, + "deflection": 0.002260448690806179, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_270": { + "node_id": "node_270", + "content": "MODIFICATION: Increase 7 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 149.21 kg\n Factor of Safety: 1.10\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.20900953267466, + "fos_buckling": 1.1006809557400206, + "fos_yielding": 2.9659867641318045, + "deflection": 0.0020892184319991976, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.335)" + }, + "parent_node_id": "node_269", + "improvement_over_parent": null + }, + "node_271": { + "node_id": "node_271", + "content": "MODIFICATION: Increase 8 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 150.60 kg\n Factor of Safety: 1.03\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.60179340134417, + "fos_buckling": 1.028235733414408, + "fos_yielding": 2.961354629041725, + "deflection": 0.0020842790456838465, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.311)" + }, + "parent_node_id": "node_270", + "improvement_over_parent": null + }, + "node_272": { + "node_id": "node_272", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 159.57 kg\n Factor of Safety: 1.18\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.56971832246887, + "fos_buckling": 1.1830739702780408, + "fos_yielding": 2.970711991504975, + "deflection": 0.002021348843477013, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002153)" + }, + "parent_node_id": "node_271", + "improvement_over_parent": null + }, + "node_273": { + "node_id": "node_273", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 178.43 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.429966533928, + "fos_buckling": 1.3022201010041363, + "fos_yielding": 3.3207113939466715, + "deflection": 0.001809842964735, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_272", + "improvement_over_parent": null + }, + "node_274": { + "node_id": "node_274", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28537838107874, + "fos_buckling": 1.568258893574482, + "fos_yielding": 4.152166938912803, + "deflection": 0.001450358422300529, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_273", + "improvement_over_parent": null + }, + "node_275": { + "node_id": "node_275", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_274", + "improvement_over_parent": null + }, + "node_276": { + "node_id": "node_276", + "content": "INITIAL DESIGN (Trace 40)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 179.60 kg\n Factor of Safety: 1.15\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.60289411955011, + "fos_buckling": 1.1500991048554245, + "fos_yielding": 3.398781746305834, + "deflection": 0.0017773604610903044, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_277": { + "node_id": "node_277", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.73 kg\n Factor of Safety: 1.36\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.73045621527987, + "fos_buckling": 1.3601209427718501, + "fos_yielding": 4.1542061400404595, + "deflection": 0.0014567500356955957, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.245)" + }, + "parent_node_id": "node_276", + "improvement_over_parent": null + }, + "node_278": { + "node_id": "node_278", + "content": "MODIFICATION: Increase 2 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.94 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.9407188300206, + "fos_buckling": 1.5585515533356564, + "fos_yielding": 4.148776209677375, + "deflection": 0.0014543839549630716, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.567)" + }, + "parent_node_id": "node_277", + "improvement_over_parent": null + }, + "node_279": { + "node_id": "node_279", + "content": "MODIFICATION: Increase 9 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.17664930332165, + "fos_buckling": 1.5675474938603593, + "fos_yielding": 4.149728631295322, + "deflection": 0.0014509948182985784, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.238)" + }, + "parent_node_id": "node_278", + "improvement_over_parent": null + }, + "node_280": { + "node_id": "node_280", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_279", + "improvement_over_parent": null + }, + "node_281": { + "node_id": "node_281", + "content": "INITIAL DESIGN (Trace 41)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 143.26 kg\n Factor of Safety: 0.05\n Max Deflection: 7.46e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.26432339337174, + "fos_buckling": 0.05188945535130563, + "fos_yielding": 1.2313135742598267, + "deflection": 0.007457412119564292, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_282": { + "node_id": "node_282", + "content": "MODIFICATION: Increase 3 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 144.27 kg\n Factor of Safety: 0.05\n Max Deflection: 7.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.26785487381323, + "fos_buckling": 0.051883924794846166, + "fos_yielding": 1.2311823366279102, + "deflection": 0.007458091721024246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.534)" + }, + "parent_node_id": "node_281", + "improvement_over_parent": null + }, + "node_283": { + "node_id": "node_283", + "content": "MODIFICATION: Increase 1 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 148.11 kg\n Factor of Safety: 0.05\n Max Deflection: 7.32e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.1104538165892, + "fos_buckling": 0.05186275876564436, + "fos_yielding": 1.2306800762188748, + "deflection": 0.007324738692975649, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.385)" + }, + "parent_node_id": "node_282", + "improvement_over_parent": null + }, + "node_284": { + "node_id": "node_284", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 178.07 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.07057462643925, + "fos_buckling": 0.060383671576349406, + "fos_yielding": 1.4763254793018636, + "deflection": 0.00610324480646792, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.222)" + }, + "parent_node_id": "node_283", + "improvement_over_parent": null + }, + "node_285": { + "node_id": "node_285", + "content": "MODIFICATION: Increase 3 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.64 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.64209916212602, + "fos_buckling": 0.060373620110440215, + "fos_yielding": 1.4760797301640805, + "deflection": 0.006103087149231976, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.479)" + }, + "parent_node_id": "node_284", + "improvement_over_parent": null + }, + "node_286": { + "node_id": "node_286", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25315340488672, + "fos_buckling": 1.5679592387920014, + "fos_yielding": 4.151254157203625, + "deflection": 0.001450443832637274, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_285", + "improvement_over_parent": null + }, + "node_287": { + "node_id": "node_287", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_286", + "improvement_over_parent": null + }, + "node_288": { + "node_id": "node_288", + "content": "INITIAL DESIGN (Trace 42)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 158.73 kg\n Factor of Safety: 0.15\n Max Deflection: 9.46e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.7291692895754, + "fos_buckling": 0.14723870742938916, + "fos_yielding": 1.734535134982623, + "deflection": 9463797172425.613, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_289": { + "node_id": "node_289", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 171.28 kg\n Factor of Safety: 0.15\n Max Deflection: 1.02e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.27752690967165, + "fos_buckling": 0.14723870742938916, + "fos_yielding": 2.1625358968577, + "deflection": 10154124455822.373, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_288", + "improvement_over_parent": null + }, + "node_290": { + "node_id": "node_290", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 174.83 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.83193424536967, + "fos_buckling": 0.06039671780658229, + "fos_yielding": 1.4766240916775086, + "deflection": 0.006101194801804464, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_289", + "improvement_over_parent": null + }, + "node_291": { + "node_id": "node_291", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.44 kg\n Factor of Safety: 1.16\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.44298848813037, + "fos_buckling": 1.157973194782844, + "fos_yielding": 4.129629953937688, + "deflection": 0.0015363753104290687, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_290", + "improvement_over_parent": null + }, + "node_292": { + "node_id": "node_292", + "content": "MODIFICATION: Increase 0 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26232323789282, + "fos_buckling": 1.5680119025123551, + "fos_yielding": 4.151356986491576, + "deflection": 0.0014503906541063522, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.403)" + }, + "parent_node_id": "node_291", + "improvement_over_parent": null + }, + "node_293": { + "node_id": "node_293", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_292", + "improvement_over_parent": null + }, + "node_294": { + "node_id": "node_294", + "content": "INITIAL DESIGN (Trace 43)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 127.91 kg\n Factor of Safety: 0.40\n Max Deflection: 4.90e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.90743581071631, + "fos_buckling": 0.3957760767851247, + "fos_yielding": 3.3958246350453916, + "deflection": 4901895688745.263, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_295": { + "node_id": "node_295", + "content": "MODIFICATION: Increase 1 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 131.29 kg\n Factor of Safety: 1.27\n Max Deflection: 4.90e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.28835698229818, + "fos_buckling": 1.2683296594494058, + "fos_yielding": 3.3950968184448613, + "deflection": 4903659638563.51, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.335)" + }, + "parent_node_id": "node_294", + "improvement_over_parent": null + }, + "node_296": { + "node_id": "node_296", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 161.90 kg\n Factor of Safety: 0.03\n Max Deflection: 8.67e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.89850342915838, + "fos_buckling": 0.02949766292167544, + "fos_yielding": 0.8671944687728975, + "deflection": 86682475770868.5, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.256)" + }, + "parent_node_id": "node_295", + "improvement_over_parent": null + }, + "node_297": { + "node_id": "node_297", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.55 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.55047178053178, + "fos_buckling": 1.4596005594058385, + "fos_yielding": 4.182097170865883, + "deflection": 0.0015207730607300876, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_296", + "improvement_over_parent": null + }, + "node_298": { + "node_id": "node_298", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 217.10 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.09882940062803, + "fos_buckling": 1.4845659149590535, + "fos_yielding": 4.201590118676197, + "deflection": 0.0015204902243030716, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_297", + "improvement_over_parent": null + }, + "node_299": { + "node_id": "node_299", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25264413892586, + "fos_buckling": 1.568046374384087, + "fos_yielding": 4.150984558517024, + "deflection": 0.0014504384175504214, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_298", + "improvement_over_parent": null + }, + "node_300": { + "node_id": "node_300", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_299", + "improvement_over_parent": null + }, + "node_301": { + "node_id": "node_301", + "content": "INITIAL DESIGN (Trace 44)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0007)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 130.61 kg\n Factor of Safety: 0.61\n Max Deflection: 2.61e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.60661869995172, + "fos_buckling": 0.6142892956334661, + "fos_yielding": 2.5662670866757655, + "deflection": 0.0026068332762414406, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_302": { + "node_id": "node_302", + "content": "MODIFICATION: Increase 2 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0007)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 131.04 kg\n Factor of Safety: 0.62\n Max Deflection: 2.60e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.0391729455093, + "fos_buckling": 0.6176674791317596, + "fos_yielding": 2.5641766464324736, + "deflection": 0.0026039824627890774, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.258)" + }, + "parent_node_id": "node_301", + "improvement_over_parent": null + }, + "node_303": { + "node_id": "node_303", + "content": "MODIFICATION: Increase 3 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 131.37 kg\n Factor of Safety: 0.69\n Max Deflection: 2.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.37307554421722, + "fos_buckling": 0.6892041926800883, + "fos_yielding": 2.564703403421192, + "deflection": 0.0025985192464024727, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.200)" + }, + "parent_node_id": "node_302", + "improvement_over_parent": null + }, + "node_304": { + "node_id": "node_304", + "content": "MODIFICATION: Increase 1 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 134.54 kg\n Factor of Safety: 0.83\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.54498714613226, + "fos_buckling": 0.8258365944863043, + "fos_yielding": 2.5620080603987145, + "deflection": 0.0024485632969446867, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.435)" + }, + "parent_node_id": "node_303", + "improvement_over_parent": null + }, + "node_305": { + "node_id": "node_305", + "content": "MODIFICATION: Increase 0 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 137.05 kg\n Factor of Safety: 0.90\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.04698775681726, + "fos_buckling": 0.9035805064516615, + "fos_yielding": 2.57268367032268, + "deflection": 0.0023388367950261733, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.307)" + }, + "parent_node_id": "node_304", + "improvement_over_parent": null + }, + "node_306": { + "node_id": "node_306", + "content": "MODIFICATION: Increase 3 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 138.19 kg\n Factor of Safety: 1.04\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.18965114505895, + "fos_buckling": 1.0427435506864673, + "fos_yielding": 2.573601276764005, + "deflection": 0.002330920746604451, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.585)" + }, + "parent_node_id": "node_305", + "improvement_over_parent": null + }, + "node_307": { + "node_id": "node_307", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 173.15 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.1466375884653, + "fos_buckling": 1.2692541116167255, + "fos_yielding": 3.222611931783131, + "deflection": 0.0018644383704019764, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.271)" + }, + "parent_node_id": "node_306", + "improvement_over_parent": null + }, + "node_308": { + "node_id": "node_308", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.46 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4619333678577, + "fos_buckling": 1.569228957766694, + "fos_yielding": 4.155339829238363, + "deflection": 0.0014492229924700365, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_307", + "improvement_over_parent": null + }, + "node_309": { + "node_id": "node_309", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_308", + "improvement_over_parent": null + }, + "node_310": { + "node_id": "node_310", + "content": "INITIAL DESIGN (Trace 45)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 102.92 kg\n Factor of Safety: 0.16\n Max Deflection: 5.46e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 102.91695493085575, + "fos_buckling": 0.1570260537689301, + "fos_yielding": 1.9110416443889826, + "deflection": 5463294059541.649, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_311": { + "node_id": "node_311", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 105.16 kg\n Factor of Safety: 0.04\n Max Deflection: 9.62e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 105.16184212977778, + "fos_buckling": 0.04085558322889004, + "fos_yielding": 0.936651151828285, + "deflection": 0.009623107139969812, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001201)" + }, + "parent_node_id": "node_310", + "improvement_over_parent": null + }, + "node_312": { + "node_id": "node_312", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 132.41 kg\n Factor of Safety: 0.05\n Max Deflection: 7.66e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 132.40602060997853, + "fos_buckling": 0.04988001730536515, + "fos_yielding": 1.1759478865652044, + "deflection": 0.007661613489641534, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.277)" + }, + "parent_node_id": "node_311", + "improvement_over_parent": null + }, + "node_313": { + "node_id": "node_313", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 166.84 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.8393543503714, + "fos_buckling": 0.060383760512086895, + "fos_yielding": 1.4763369526580803, + "deflection": 0.00609945180290894, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.284)" + }, + "parent_node_id": "node_312", + "improvement_over_parent": null + }, + "node_314": { + "node_id": "node_314", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 203.09 kg\n Factor of Safety: 1.00\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.0857233521983, + "fos_buckling": 1.003798120572303, + "fos_yielding": 3.162129076363944, + "deflection": 0.0015681454414832796, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004719)" + }, + "parent_node_id": "node_313", + "improvement_over_parent": null + }, + "node_315": { + "node_id": "node_315", + "content": "MODIFICATION: Increase 3 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0101)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 222.22 kg\n Factor of Safety: 0.64\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.21909422068646, + "fos_buckling": 0.6442253819033013, + "fos_yielding": 3.1695237666602414, + "deflection": 0.0015440341830498662, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.642)" + }, + "parent_node_id": "node_314", + "improvement_over_parent": null + }, + "node_316": { + "node_id": "node_316", + "content": "MODIFICATION: Increase 7 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0101)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 224.70 kg\n Factor of Safety: 0.64\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 224.69500049145446, + "fos_buckling": 0.6437942013362448, + "fos_yielding": 3.168367221762571, + "deflection": 0.001544116812452349, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.222)" + }, + "parent_node_id": "node_315", + "improvement_over_parent": null + }, + "node_317": { + "node_id": "node_317", + "content": "MODIFICATION: Increase 6 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0101)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0041)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 229.18 kg\n Factor of Safety: 0.55\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 229.1790442020336, + "fos_buckling": 0.5458768057430314, + "fos_yielding": 3.1719732646431815, + "deflection": 0.001532739488663494, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.610)" + }, + "parent_node_id": "node_316", + "improvement_over_parent": null + }, + "node_318": { + "node_id": "node_318", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_317", + "improvement_over_parent": null + }, + "node_319": { + "node_id": "node_319", + "content": "INITIAL DESIGN (Trace 46)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_320": { + "node_id": "node_320", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 140.07 kg\n Factor of Safety: 0.04\n Max Deflection: 4.21e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.06872303533558, + "fos_buckling": 0.0378765736064035, + "fos_yielding": 0.540633974214425, + "deflection": 42088364977690.49, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001963)" + }, + "parent_node_id": "node_319", + "improvement_over_parent": null + }, + "node_321": { + "node_id": "node_321", + "content": "MODIFICATION: Increase 2 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 141.05 kg\n Factor of Safety: 0.15\n Max Deflection: 8.92e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.04903043059875, + "fos_buckling": 0.151506294425614, + "fos_yielding": 2.1625358968576998, + "deflection": 8918360609426.096, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.527)" + }, + "parent_node_id": "node_320", + "improvement_over_parent": null + }, + "node_322": { + "node_id": "node_322", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 168.15 kg\n Factor of Safety: 0.26\n Max Deflection: 7.48e+12 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.1453818442309, + "fos_buckling": 0.25744080971370387, + "fos_yielding": 3.8659340150477233, + "deflection": 7482277032431.418, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.211)" + }, + "parent_node_id": "node_321", + "improvement_over_parent": null + }, + "node_323": { + "node_id": "node_323", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 180.69 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.69373946432717, + "fos_buckling": 0.12792984214290393, + "fos_yielding": 2.149254240002044, + "deflection": 0.004835158717650618, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_322", + "improvement_over_parent": null + }, + "node_324": { + "node_id": "node_324", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.34570781570056, + "fos_buckling": 1.5681397578192513, + "fos_yielding": 4.15340543553873, + "deflection": 0.0014499060696337124, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_323", + "improvement_over_parent": null + }, + "node_325": { + "node_id": "node_325", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_324", + "improvement_over_parent": null + }, + "node_326": { + "node_id": "node_326", + "content": "INITIAL DESIGN (Trace 47)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 143.24 kg\n Factor of Safety: 1.06\n Max Deflection: 2.26e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.23842619897573, + "fos_buckling": 1.0578124171000498, + "fos_yielding": 2.8252520976465356, + "deflection": 0.0022565394193337844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_327": { + "node_id": "node_327", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 179.00 kg\n Factor of Safety: 1.28\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.0046229228819, + "fos_buckling": 1.282054453737952, + "fos_yielding": 3.5274269015421167, + "deflection": 0.00180908250351723, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.269)" + }, + "parent_node_id": "node_326", + "improvement_over_parent": null + }, + "node_328": { + "node_id": "node_328", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.12 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.12073766781003, + "fos_buckling": 1.4812484291647177, + "fos_yielding": 4.195929159181484, + "deflection": 0.0015222432235288612, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_327", + "improvement_over_parent": null + }, + "node_329": { + "node_id": "node_329", + "content": "MODIFICATION: Increase 7 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.48 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.47613499535464, + "fos_buckling": 1.482116602730928, + "fos_yielding": 4.195714038727408, + "deflection": 0.0015222334285979167, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.414)" + }, + "parent_node_id": "node_328", + "improvement_over_parent": null + }, + "node_330": { + "node_id": "node_330", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 221.63 kg\n Factor of Safety: 1.48\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.62994973365247, + "fos_buckling": 1.4829101113758636, + "fos_yielding": 4.14504884688425, + "deflection": 0.0014554942177826629, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_329", + "improvement_over_parent": null + }, + "node_331": { + "node_id": "node_331", + "content": "MODIFICATION: Increase 3 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 222.98 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.97791855132945, + "fos_buckling": 1.5664397689610499, + "fos_yielding": 4.146040076104064, + "deflection": 0.001452246845581759, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.387)" + }, + "parent_node_id": "node_330", + "improvement_over_parent": null + }, + "node_332": { + "node_id": "node_332", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_331", + "improvement_over_parent": null + }, + "node_333": { + "node_id": "node_333", + "content": "INITIAL DESIGN (Trace 48)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 165.56 kg\n Factor of Safety: 0.18\n Max Deflection: 5.81e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.55935643161743, + "fos_buckling": 0.17624877842992215, + "fos_yielding": 4.314629747579289, + "deflection": 5807790453927.693, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_334": { + "node_id": "node_334", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 178.11 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.10771405171369, + "fos_buckling": 0.12791811195728653, + "fos_yielding": 2.148787021469935, + "deflection": 0.004838044998786936, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_333", + "improvement_over_parent": null + }, + "node_335": { + "node_id": "node_335", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.76 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.75968240308708, + "fos_buckling": 1.5675941566090743, + "fos_yielding": 4.1586111587167, + "deflection": 0.0014533633668542198, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_334", + "improvement_over_parent": null + }, + "node_336": { + "node_id": "node_336", + "content": "MODIFICATION: Increase 8 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26133621028112, + "fos_buckling": 1.5680826662080756, + "fos_yielding": 4.1513385361203925, + "deflection": 0.0014504227359730263, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.449)" + }, + "parent_node_id": "node_335", + "improvement_over_parent": null + }, + "node_337": { + "node_id": "node_337", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_336", + "improvement_over_parent": null + }, + "node_338": { + "node_id": "node_338", + "content": "INITIAL DESIGN (Trace 49)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 124.56 kg\n Factor of Safety: 1.03\n Max Deflection: 7.87e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.55671718057275, + "fos_buckling": 1.0277429382526222, + "fos_yielding": 2.8998111732459586, + "deflection": 7870126075306.684, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_339": { + "node_id": "node_339", + "content": "MODIFICATION: Increase 0 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 126.98 kg\n Factor of Safety: 1.04\n Max Deflection: 1.04e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.97803239376134, + "fos_buckling": 1.0442719525915274, + "fos_yielding": 2.9464483416260134, + "deflection": 10422067063378.836, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.215)" + }, + "parent_node_id": "node_338", + "improvement_over_parent": null + }, + "node_340": { + "node_id": "node_340", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 156.71 kg\n Factor of Safety: 0.36\n Max Deflection: 1.88e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.70653799307019, + "fos_buckling": 0.3615852243819861, + "fos_yielding": 2.1464873201454093, + "deflection": 18752300184542.312, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.256)" + }, + "parent_node_id": "node_339", + "improvement_over_parent": null + }, + "node_341": { + "node_id": "node_341", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 162.86 kg\n Factor of Safety: 0.08\n Max Deflection: 1.25e+13 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.860352731368, + "fos_buckling": 0.08347027553553456, + "fos_yielding": 1.6841209536166006, + "deflection": 12530448372242.113, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_340", + "improvement_over_parent": null + }, + "node_342": { + "node_id": "node_342", + "content": "MODIFICATION: Increase 4 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 165.80 kg\n Factor of Safety: 0.04\n Max Deflection: 1.28e+13 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.80104010423526, + "fos_buckling": 0.037127042342114655, + "fos_yielding": 1.1630270604627175, + "deflection": 12766225173737.746, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.391)" + }, + "parent_node_id": "node_341", + "improvement_over_parent": null + }, + "node_343": { + "node_id": "node_343", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 169.36 kg\n Factor of Safety: 0.06\n Max Deflection: 5.50e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.35544743993327, + "fos_buckling": 0.06038050292578201, + "fos_yielding": 1.476227658154249, + "deflection": 0.005501862037517196, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_342", + "improvement_over_parent": null + }, + "node_344": { + "node_id": "node_344", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 174.53 kg\n Factor of Safety: 0.06\n Max Deflection: 5.49e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.52979031666194, + "fos_buckling": 0.06034741973320072, + "fos_yielding": 1.4754188155388013, + "deflection": 0.005488647881776508, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_343", + "improvement_over_parent": null + }, + "node_345": { + "node_id": "node_345", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M4: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.14 kg\n Factor of Safety: 1.24\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.14084455942265, + "fos_buckling": 1.2422453442691785, + "fos_yielding": 3.5911237466498984, + "deflection": 0.001471975922512323, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_344", + "improvement_over_parent": null + }, + "node_346": { + "node_id": "node_346", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_345", + "improvement_over_parent": null + }, + "node_347": { + "node_id": "node_347", + "content": "INITIAL DESIGN (Trace 50)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 164.71 kg\n Factor of Safety: 0.91\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.71146317481356, + "fos_buckling": 0.9127193154272838, + "fos_yielding": 3.608960261483805, + "deflection": 0.002099111276503546, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_348": { + "node_id": "node_348", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 167.77 kg\n Factor of Safety: 0.61\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.7677298009879, + "fos_buckling": 0.607145844588697, + "fos_yielding": 3.5158461742275944, + "deflection": 0.0019772165745739483, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001670)" + }, + "parent_node_id": "node_347", + "improvement_over_parent": null + }, + "node_349": { + "node_id": "node_349", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 178.56 kg\n Factor of Safety: 0.67\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.55802400342262, + "fos_buckling": 0.6745388768745662, + "fos_yielding": 3.524865782594735, + "deflection": 0.0019342207179377975, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002626)" + }, + "parent_node_id": "node_348", + "improvement_over_parent": null + }, + "node_350": { + "node_id": "node_350", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 207.81 kg\n Factor of Safety: 0.77\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.8056103275261, + "fos_buckling": 0.7662041399543209, + "fos_yielding": 4.097684723908317, + "deflection": 0.0016630355345046556, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.179)" + }, + "parent_node_id": "node_349", + "improvement_over_parent": null + }, + "node_351": { + "node_id": "node_351", + "content": "MODIFICATION: Increase 7 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0041)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 212.24 kg\n Factor of Safety: 0.65\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.2424476659129, + "fos_buckling": 0.6544617879493723, + "fos_yielding": 4.080488225153842, + "deflection": 0.0016520562680091663, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.603)" + }, + "parent_node_id": "node_350", + "improvement_over_parent": null + }, + "node_352": { + "node_id": "node_352", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_351", + "improvement_over_parent": null + }, + "node_353": { + "node_id": "node_353", + "content": "INITIAL DESIGN (Trace 51)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 131.33 kg\n Factor of Safety: 1.15\n Max Deflection: 8.79e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.3334033438238, + "fos_buckling": 1.15113696949142, + "fos_yielding": 3.286563333615335, + "deflection": 8787840856391.816, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_354": { + "node_id": "node_354", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 169.28 kg\n Factor of Safety: 1.15\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.27632919087128, + "fos_buckling": 1.15113696949142, + "fos_yielding": 3.286563333615335, + "deflection": 0.0018216448290937388, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005023)" + }, + "parent_node_id": "node_353", + "improvement_over_parent": null + }, + "node_355": { + "node_id": "node_355", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 176.94 kg\n Factor of Safety: 0.94\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.93792186486098, + "fos_buckling": 0.9368624122041647, + "fos_yielding": 3.286563333615335, + "deflection": 0.0017541804860322688, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002257)" + }, + "parent_node_id": "node_354", + "improvement_over_parent": null + }, + "node_356": { + "node_id": "node_356", + "content": "MODIFICATION: Increase 0 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 180.60 kg\n Factor of Safety: 1.15\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.60074269966447, + "fos_buckling": 1.15113696949142, + "fos_yielding": 3.286563333615335, + "deflection": 0.0016787386829121946, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.323)" + }, + "parent_node_id": "node_355", + "improvement_over_parent": null + }, + "node_357": { + "node_id": "node_357", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 191.77 kg\n Factor of Safety: 1.13\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.765723595241, + "fos_buckling": 1.1331202395951654, + "fos_yielding": 3.2351245166560973, + "deflection": 0.0016533791332779216, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002725)" + }, + "parent_node_id": "node_356", + "improvement_over_parent": null + }, + "node_358": { + "node_id": "node_358", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 215.57 kg\n Factor of Safety: 1.26\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.5713862074282, + "fos_buckling": 1.257997380399963, + "fos_yielding": 3.6440505050501795, + "deflection": 0.0014732547287407568, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.136)" + }, + "parent_node_id": "node_357", + "improvement_over_parent": null + }, + "node_359": { + "node_id": "node_359", + "content": "MODIFICATION: Increase 6 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21651487464638, + "fos_buckling": 1.5678119191753677, + "fos_yielding": 4.1502734328247985, + "deflection": 0.0014507930661954137, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.368)" + }, + "parent_node_id": "node_358", + "improvement_over_parent": null + }, + "node_360": { + "node_id": "node_360", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_359", + "improvement_over_parent": null + }, + "node_361": { + "node_id": "node_361", + "content": "INITIAL DESIGN (Trace 52)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 119.18 kg\n Factor of Safety: 0.93\n Max Deflection: 6.69e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.18195143963175, + "fos_buckling": 0.9259112378799279, + "fos_yielding": 2.246742758530351, + "deflection": 6688491317967.952, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_362": { + "node_id": "node_362", + "content": "MODIFICATION: Increase 3 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 120.32 kg\n Factor of Safety: 0.93\n Max Deflection: 6.14e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.32105334869848, + "fos_buckling": 0.9259112378799279, + "fos_yielding": 2.246742758530351, + "deflection": 6141540819599.733, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.397)" + }, + "parent_node_id": "node_361", + "improvement_over_parent": null + }, + "node_363": { + "node_id": "node_363", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 155.14 kg\n Factor of Safety: 0.93\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.1449747995483, + "fos_buckling": 0.9259112378799279, + "fos_yielding": 2.246742758530351, + "deflection": 0.0019169303571906348, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004578)" + }, + "parent_node_id": "node_362", + "improvement_over_parent": null + }, + "node_364": { + "node_id": "node_364", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 165.39 kg\n Factor of Safety: 0.93\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.38993634574766, + "fos_buckling": 0.9259112378799279, + "fos_yielding": 2.246742758530351, + "deflection": 0.0019169303571906348, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002483)" + }, + "parent_node_id": "node_363", + "improvement_over_parent": null + }, + "node_365": { + "node_id": "node_365", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 172.42 kg\n Factor of Safety: 0.93\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.42157246092947, + "fos_buckling": 0.9298861794880635, + "fos_yielding": 2.256388036509813, + "deflection": 0.0019087361433128781, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002057)" + }, + "parent_node_id": "node_364", + "improvement_over_parent": null + }, + "node_366": { + "node_id": "node_366", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 211.36 kg\n Factor of Safety: 1.12\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.3619325948339, + "fos_buckling": 1.1219930650360639, + "fos_yielding": 2.780245716901202, + "deflection": 0.0015490894824308455, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.247)" + }, + "parent_node_id": "node_365", + "improvement_over_parent": null + }, + "node_367": { + "node_id": "node_367", + "content": "MODIFICATION: Increase 4 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31106930559707, + "fos_buckling": 1.5682311648041034, + "fos_yielding": 4.153809642369197, + "deflection": 0.0014501666089831863, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.567)" + }, + "parent_node_id": "node_366", + "improvement_over_parent": null + }, + "node_368": { + "node_id": "node_368", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_367", + "improvement_over_parent": null + }, + "node_369": { + "node_id": "node_369", + "content": "INITIAL DESIGN (Trace 53)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 151.62 kg\n Factor of Safety: 0.86\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.62219476486592, + "fos_buckling": 0.857250886719143, + "fos_yielding": 3.2759606249263062, + "deflection": 0.0022246556853982276, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_370": { + "node_id": "node_370", + "content": "MODIFICATION: Increase 2 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 152.23 kg\n Factor of Safety: 0.86\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.22719138520836, + "fos_buckling": 0.8571953984262831, + "fos_yielding": 3.275834632528504, + "deflection": 0.002224799196040461, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.299)" + }, + "parent_node_id": "node_369", + "improvement_over_parent": null + }, + "node_371": { + "node_id": "node_371", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n\nPerformance:\n Mass: 155.93 kg\n Factor of Safety: 0.90\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.93439416670017, + "fos_buckling": 0.9022472106211084, + "fos_yielding": 3.275834632528504, + "deflection": 0.002090282120715294, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001489)" + }, + "parent_node_id": "node_370", + "improvement_over_parent": null + }, + "node_372": { + "node_id": "node_372", + "content": "MODIFICATION: Increase 5 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n\nPerformance:\n Mass: 162.77 kg\n Factor of Safety: 0.76\n Max Deflection: 2.06e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.76675263912676, + "fos_buckling": 0.763835263228057, + "fos_yielding": 3.275834632528504, + "deflection": 0.0020637565859625067, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.316)" + }, + "parent_node_id": "node_371", + "improvement_over_parent": null + }, + "node_373": { + "node_id": "node_373", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 208.54 kg\n Factor of Safety: 0.94\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.5377491981577, + "fos_buckling": 0.9425877237311231, + "fos_yielding": 4.195737038098777, + "deflection": 0.0016117757490863246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.309)" + }, + "parent_node_id": "node_372", + "improvement_over_parent": null + }, + "node_374": { + "node_id": "node_374", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.15 kg\n Factor of Safety: 0.96\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.15085381291837, + "fos_buckling": 0.9636579247065743, + "fos_yielding": 4.170268367153452, + "deflection": 0.001603029168662876, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_373", + "improvement_over_parent": null + }, + "node_375": { + "node_id": "node_375", + "content": "MODIFICATION: Increase 10 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0038)]\n\nPerformance:\n Mass: 220.80 kg\n Factor of Safety: 0.95\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.79959983058413, + "fos_buckling": 0.9518899048415879, + "fos_yielding": 4.165727879467583, + "deflection": 0.0016019338936902473, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.490)" + }, + "parent_node_id": "node_374", + "improvement_over_parent": null + }, + "node_376": { + "node_id": "node_376", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_375", + "improvement_over_parent": null + }, + "node_377": { + "node_id": "node_377", + "content": "INITIAL DESIGN (Trace 54)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 121.74 kg\n Factor of Safety: 0.72\n Max Deflection: 2.80e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.73564198765303, + "fos_buckling": 0.7219431836391803, + "fos_yielding": 2.4253921793740294, + "deflection": 0.0027954267338970913, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_378": { + "node_id": "node_378", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 147.99 kg\n Factor of Safety: 0.86\n Max Deflection: 2.30e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.9942193716127, + "fos_buckling": 0.8639674727605877, + "fos_yielding": 2.945687061251848, + "deflection": 0.0023020628360902844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.229)" + }, + "parent_node_id": "node_377", + "improvement_over_parent": null + }, + "node_379": { + "node_id": "node_379", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n\nPerformance:\n Mass: 151.67 kg\n Factor of Safety: 0.94\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.67052300197668, + "fos_buckling": 0.94311392251756, + "fos_yielding": 2.9595509688263917, + "deflection": 0.002188735222052379, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001642)" + }, + "parent_node_id": "node_378", + "improvement_over_parent": null + }, + "node_380": { + "node_id": "node_380", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 192.60 kg\n Factor of Safety: 1.15\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.5957911302971, + "fos_buckling": 1.153867711025315, + "fos_yielding": 3.7525131059134895, + "deflection": 0.001726821877583427, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_379", + "improvement_over_parent": null + }, + "node_381": { + "node_id": "node_381", + "content": "MODIFICATION: Increase 10 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0028)]\n\nPerformance:\n Mass: 193.95 kg\n Factor of Safety: 1.20\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.9504234517197, + "fos_buckling": 1.197791703044775, + "fos_yielding": 3.753405212569376, + "deflection": 0.0017224458191589878, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.325)" + }, + "parent_node_id": "node_380", + "improvement_over_parent": null + }, + "node_382": { + "node_id": "node_382", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n\nPerformance:\n Mass: 215.19 kg\n Factor of Safety: 1.31\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.18678114492377, + "fos_buckling": 1.3119617200210114, + "fos_yielding": 4.161531865956416, + "deflection": 0.0015538102950589303, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_381", + "improvement_over_parent": null + }, + "node_383": { + "node_id": "node_383", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_382", + "improvement_over_parent": null + }, + "node_384": { + "node_id": "node_384", + "content": "INITIAL DESIGN (Trace 55)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_385": { + "node_id": "node_385", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 127.28 kg\n Factor of Safety: 0.98\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.28249766933114, + "fos_buckling": 0.97606853369673, + "fos_yielding": 2.4909308434795827, + "deflection": 0.0024645137916368518, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001124)" + }, + "parent_node_id": "node_384", + "improvement_over_parent": null + }, + "node_386": { + "node_id": "node_386", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 144.09 kg\n Factor of Safety: 1.09\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.08766428161354, + "fos_buckling": 1.0889991704249504, + "fos_yielding": 2.819267840442789, + "deflection": 0.0021795759512528985, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_385", + "improvement_over_parent": null + }, + "node_387": { + "node_id": "node_387", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 173.57 kg\n Factor of Safety: 1.28\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.56997276926668, + "fos_buckling": 1.278256048890971, + "fos_yielding": 3.394984354546709, + "deflection": 0.0018130009144538195, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_386", + "improvement_over_parent": null + }, + "node_388": { + "node_id": "node_388", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.83 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.8254731114771, + "fos_buckling": 1.5242599183235033, + "fos_yielding": 4.199951200828049, + "deflection": 0.0014689487562236357, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.261)" + }, + "parent_node_id": "node_387", + "improvement_over_parent": null + }, + "node_389": { + "node_id": "node_389", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.44 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.43857772623775, + "fos_buckling": 1.5690688833392155, + "fos_yielding": 4.15481119676225, + "deflection": 0.0014492525314596955, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_388", + "improvement_over_parent": null + }, + "node_390": { + "node_id": "node_390", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_389", + "improvement_over_parent": null + }, + "node_391": { + "node_id": "node_391", + "content": "INITIAL DESIGN (Trace 56)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 115.49 kg\n Factor of Safety: 0.90\n Max Deflection: 2.93e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.49134405161557, + "fos_buckling": 0.8957207144294406, + "fos_yielding": 2.2630957689417226, + "deflection": 0.002928275283135381, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_392": { + "node_id": "node_392", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n\nPerformance:\n Mass: 116.75 kg\n Factor of Safety: 0.51\n Max Deflection: 2.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.75289852487954, + "fos_buckling": 0.5084135491873203, + "fos_yielding": 2.231403713593237, + "deflection": 0.002865799458325791, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000659)" + }, + "parent_node_id": "node_391", + "improvement_over_parent": null + }, + "node_393": { + "node_id": "node_393", + "content": "MODIFICATION: Increase 2 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n\nPerformance:\n Mass: 118.16 kg\n Factor of Safety: 0.52\n Max Deflection: 2.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 118.16165699572106, + "fos_buckling": 0.5162867986918326, + "fos_yielding": 2.23187765055782, + "deflection": 0.002859657932442957, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.543)" + }, + "parent_node_id": "node_392", + "improvement_over_parent": null + }, + "node_394": { + "node_id": "node_394", + "content": "MODIFICATION: Increase 0 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n\nPerformance:\n Mass: 121.03 kg\n Factor of Safety: 0.85\n Max Deflection: 2.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.0347608458415, + "fos_buckling": 0.8484139580351678, + "fos_yielding": 2.243925528477207, + "deflection": 0.002672409068717757, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.443)" + }, + "parent_node_id": "node_393", + "improvement_over_parent": null + }, + "node_395": { + "node_id": "node_395", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0022)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n\nPerformance:\n Mass: 139.72 kg\n Factor of Safety: 0.96\n Max Deflection: 2.32e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.71549210307677, + "fos_buckling": 0.9635502142889147, + "fos_yielding": 2.58972578747139, + "deflection": 0.002317594241641697, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_394", + "improvement_over_parent": null + }, + "node_396": { + "node_id": "node_396", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0028)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n\nPerformance:\n Mass: 172.56 kg\n Factor of Safety: 1.16\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.56477826678653, + "fos_buckling": 1.1564720689916483, + "fos_yielding": 3.197482723654503, + "deflection": 0.0018799631725501206, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.252)" + }, + "parent_node_id": "node_395", + "improvement_over_parent": null + }, + "node_397": { + "node_id": "node_397", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0037)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 224.83 kg\n Factor of Safety: 1.44\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 224.82638167130577, + "fos_buckling": 1.4393133087370515, + "fos_yielding": 4.1636096700231455, + "deflection": 0.0014472508110078544, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.333)" + }, + "parent_node_id": "node_396", + "improvement_over_parent": null + }, + "node_398": { + "node_id": "node_398", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_397", + "improvement_over_parent": null + }, + "node_399": { + "node_id": "node_399", + "content": "INITIAL DESIGN (Trace 57)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 124.27 kg\n Factor of Safety: 0.66\n Max Deflection: 2.59e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.2740687502242, + "fos_buckling": 0.6617136140063409, + "fos_yielding": 2.021160894070385, + "deflection": 0.002591430843124708, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_400": { + "node_id": "node_400", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 155.89 kg\n Factor of Safety: 0.80\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.88980255324893, + "fos_buckling": 0.8046875910404457, + "fos_yielding": 2.5426171663673798, + "deflection": 0.0020691507514815125, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.271)" + }, + "parent_node_id": "node_399", + "improvement_over_parent": null + }, + "node_401": { + "node_id": "node_401", + "content": "MODIFICATION: Increase 6 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 164.26 kg\n Factor of Safety: 0.90\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.2601910763385, + "fos_buckling": 0.9045741885280328, + "fos_yielding": 3.268374226177887, + "deflection": 0.002032908106030819, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.572)" + }, + "parent_node_id": "node_400", + "improvement_over_parent": null + }, + "node_402": { + "node_id": "node_402", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 207.91 kg\n Factor of Safety: 1.14\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.90703698356128, + "fos_buckling": 1.1387852360094728, + "fos_yielding": 4.128858829218935, + "deflection": 0.0016085718879586207, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.290)" + }, + "parent_node_id": "node_401", + "improvement_over_parent": null + }, + "node_403": { + "node_id": "node_403", + "content": "MODIFICATION: Increase 8 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.37 kg\n Factor of Safety: 1.08\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.37034268834253, + "fos_buckling": 1.077619060893636, + "fos_yielding": 4.123144459139955, + "deflection": 0.0016056541697258538, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.225)" + }, + "parent_node_id": "node_402", + "improvement_over_parent": null + }, + "node_404": { + "node_id": "node_404", + "content": "MODIFICATION: Increase 7 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.82 kg\n Factor of Safety: 1.38\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.82063496617218, + "fos_buckling": 1.382515521131159, + "fos_yielding": 4.157351957430395, + "deflection": 0.0014616344587411038, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.391)" + }, + "parent_node_id": "node_403", + "improvement_over_parent": null + }, + "node_405": { + "node_id": "node_405", + "content": "MODIFICATION: Increase 5 thickness by 67%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.15 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1492943704664, + "fos_buckling": 1.567453332722273, + "fos_yielding": 4.149537116050513, + "deflection": 0.0014511357832395736, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.667)" + }, + "parent_node_id": "node_404", + "improvement_over_parent": null + }, + "node_406": { + "node_id": "node_406", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_405", + "improvement_over_parent": null + }, + "node_407": { + "node_id": "node_407", + "content": "INITIAL DESIGN (Trace 58)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_408": { + "node_id": "node_408", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 110.47 kg\n Factor of Safety: 0.05\n Max Deflection: 1.30e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.47023653603375, + "fos_buckling": 0.05454356336910054, + "fos_yielding": 1.0929801307549387, + "deflection": 0.013030675287656826, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002230)" + }, + "parent_node_id": "node_407", + "improvement_over_parent": null + }, + "node_409": { + "node_id": "node_409", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 148.81 kg\n Factor of Safety: 0.12\n Max Deflection: 5.49e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.81349780059742, + "fos_buckling": 0.11507462946684897, + "fos_yielding": 1.8918631701613657, + "deflection": 0.005488118960133805, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005015)" + }, + "parent_node_id": "node_408", + "improvement_over_parent": null + }, + "node_410": { + "node_id": "node_410", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 174.40 kg\n Factor of Safety: 0.91\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.3957548076781, + "fos_buckling": 0.9105056093961708, + "fos_yielding": 2.507830244748536, + "deflection": 0.0018671393074982505, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003297)" + }, + "parent_node_id": "node_409", + "improvement_over_parent": null + }, + "node_411": { + "node_id": "node_411", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 198.59 kg\n Factor of Safety: 1.01\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.5870035361068, + "fos_buckling": 1.0142644666426481, + "fos_yielding": 2.8629873955011234, + "deflection": 0.0016416123782750968, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_410", + "improvement_over_parent": null + }, + "node_412": { + "node_id": "node_412", + "content": "MODIFICATION: Increase 10 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 212.01 kg\n Factor of Safety: 1.15\n Max Deflection: 1.51e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.0149017312184, + "fos_buckling": 1.1491628639726406, + "fos_yielding": 2.856789799513101, + "deflection": 0.0015075835818788973, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.504)" + }, + "parent_node_id": "node_411", + "improvement_over_parent": null + }, + "node_413": { + "node_id": "node_413", + "content": "MODIFICATION: Increase 4 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28761555218276, + "fos_buckling": 1.568011595563048, + "fos_yielding": 4.152542230065076, + "deflection": 0.001450309596223959, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.520)" + }, + "parent_node_id": "node_412", + "improvement_over_parent": null + }, + "node_414": { + "node_id": "node_414", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_413", + "improvement_over_parent": null + }, + "node_415": { + "node_id": "node_415", + "content": "INITIAL DESIGN (Trace 59)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 120.74 kg\n Factor of Safety: 0.70\n Max Deflection: 2.79e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.74106802681712, + "fos_buckling": 0.696846833448539, + "fos_yielding": 2.394025013128525, + "deflection": 0.002785767313585606, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_416": { + "node_id": "node_416", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 136.76 kg\n Factor of Safety: 0.78\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.76437716283684, + "fos_buckling": 0.7785944946313849, + "fos_yielding": 2.709921486748058, + "deflection": 0.0024609877894833264, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_415", + "improvement_over_parent": null + }, + "node_417": { + "node_id": "node_417", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 171.99 kg\n Factor of Safety: 0.95\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.9864897572828, + "fos_buckling": 0.9497821201002602, + "fos_yielding": 3.4027124922298326, + "deflection": 0.0019597270188324877, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_416", + "improvement_over_parent": null + }, + "node_418": { + "node_id": "node_418", + "content": "MODIFICATION: Increase 10 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 179.57 kg\n Factor of Safety: 1.25\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.57013956559325, + "fos_buckling": 1.249099102902543, + "fos_yielding": 3.3982899805674003, + "deflection": 0.0018387561665228866, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.299)" + }, + "parent_node_id": "node_417", + "improvement_over_parent": null + }, + "node_419": { + "node_id": "node_419", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.69 kg\n Factor of Safety: 1.47\n Max Deflection: 1.51e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.6934189608973, + "fos_buckling": 1.4700853130112148, + "fos_yielding": 4.15348618288278, + "deflection": 0.001506019734195805, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.245)" + }, + "parent_node_id": "node_418", + "improvement_over_parent": null + }, + "node_420": { + "node_id": "node_420", + "content": "MODIFICATION: Increase 1 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21660383961472, + "fos_buckling": 1.568087706135593, + "fos_yielding": 4.150376669747585, + "deflection": 0.0014506988315037216, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.276)" + }, + "parent_node_id": "node_419", + "improvement_over_parent": null + }, + "node_421": { + "node_id": "node_421", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_420", + "improvement_over_parent": null + }, + "node_422": { + "node_id": "node_422", + "content": "INITIAL DESIGN (Trace 60)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 161.15 kg\n Factor of Safety: 0.06\n Max Deflection: 1.06e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.15290938778148, + "fos_buckling": 0.06046824295972681, + "fos_yielding": 1.2873304142064959, + "deflection": 0.010604401747687004, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_423": { + "node_id": "node_423", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 167.31 kg\n Factor of Safety: 0.06\n Max Deflection: 6.97e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.3067241260793, + "fos_buckling": 0.06038939402008911, + "fos_yielding": 1.285651770456401, + "deflection": 0.006974009476306182, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_422", + "improvement_over_parent": null + }, + "node_424": { + "node_id": "node_424", + "content": "MODIFICATION: Increase 6 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0028)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 170.39 kg\n Factor of Safety: 0.06\n Max Deflection: 5.90e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.38936999250862, + "fos_buckling": 0.06036967721313271, + "fos_yielding": 1.475989371955031, + "deflection": 0.005897374084817334, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.541)" + }, + "parent_node_id": "node_423", + "improvement_over_parent": null + }, + "node_425": { + "node_id": "node_425", + "content": "MODIFICATION: Increase 7 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0028)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0043)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 174.76 kg\n Factor of Safety: 0.06\n Max Deflection: 5.90e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.75949354345636, + "fos_buckling": 0.0603417476671121, + "fos_yielding": 1.4753065173334234, + "deflection": 0.005897278126003094, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.399)" + }, + "parent_node_id": "node_424", + "improvement_over_parent": null + }, + "node_426": { + "node_id": "node_426", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0028)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0043)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.37 kg\n Factor of Safety: 1.15\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.37054778621706, + "fos_buckling": 1.146522422684993, + "fos_yielding": 3.2764014824503036, + "deflection": 0.0014812274716983177, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_425", + "improvement_over_parent": null + }, + "node_427": { + "node_id": "node_427", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_426", + "improvement_over_parent": null + }, + "node_428": { + "node_id": "node_428", + "content": "INITIAL DESIGN (Trace 61)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0016)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 91.18 kg\n Factor of Safety: 0.07\n Max Deflection: 9.26e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 91.18356846940263, + "fos_buckling": 0.07268153859987578, + "fos_yielding": 1.1235907950507165, + "deflection": 0.009264095534822088, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_429": { + "node_id": "node_429", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0016)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 113.34 kg\n Factor of Safety: 0.81\n Max Deflection: 2.91e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.34440622833085, + "fos_buckling": 0.807124269832711, + "fos_yielding": 2.1649236954618427, + "deflection": 0.002910660719384111, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002836)" + }, + "parent_node_id": "node_428", + "improvement_over_parent": null + }, + "node_430": { + "node_id": "node_430", + "content": "MODIFICATION: Increase 1 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 115.58 kg\n Factor of Safety: 0.87\n Max Deflection: 2.77e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.57944751014628, + "fos_buckling": 0.8739546711249326, + "fos_yielding": 2.1630605425827514, + "deflection": 0.0027748731142189583, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.339)" + }, + "parent_node_id": "node_429", + "improvement_over_parent": null + }, + "node_431": { + "node_id": "node_431", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 136.96 kg\n Factor of Safety: 1.01\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.95752306126872, + "fos_buckling": 1.0144044988756489, + "fos_yielding": 2.5621144152070006, + "deflection": 0.0023449639665938733, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.195)" + }, + "parent_node_id": "node_430", + "improvement_over_parent": null + }, + "node_432": { + "node_id": "node_432", + "content": "MODIFICATION: Increase 2 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 137.48 kg\n Factor of Safety: 1.04\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.47700825729825, + "fos_buckling": 1.0377776825272, + "fos_yielding": 2.5601517879826328, + "deflection": 0.002342676057262891, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.328)" + }, + "parent_node_id": "node_431", + "improvement_over_parent": null + }, + "node_433": { + "node_id": "node_433", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 154.94 kg\n Factor of Safety: 1.15\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.93968789491979, + "fos_buckling": 1.1529297475201472, + "fos_yielding": 2.8844485884129405, + "deflection": 0.0020809389315432185, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_432", + "improvement_over_parent": null + }, + "node_434": { + "node_id": "node_434", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 183.15 kg\n Factor of Safety: 1.33\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.14642409411329, + "fos_buckling": 1.3310833361002927, + "fos_yielding": 3.407844496165568, + "deflection": 0.0017635886674844772, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.196)" + }, + "parent_node_id": "node_433", + "improvement_over_parent": null + }, + "node_435": { + "node_id": "node_435", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3400698439846, + "fos_buckling": 1.568287953650404, + "fos_yielding": 4.1527557812992715, + "deflection": 0.0014498707154215922, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.241)" + }, + "parent_node_id": "node_434", + "improvement_over_parent": null + }, + "node_436": { + "node_id": "node_436", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_435", + "improvement_over_parent": null + }, + "node_437": { + "node_id": "node_437", + "content": "INITIAL DESIGN (Trace 62)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 203.94 kg\n Factor of Safety: 0.93\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.94368369529988, + "fos_buckling": 0.9323451860773345, + "fos_yielding": 4.1142992092269095, + "deflection": 0.0017652297082271673, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_438": { + "node_id": "node_438", + "content": "MODIFICATION: Increase 1 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 207.04 kg\n Factor of Safety: 0.93\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.04362466771917, + "fos_buckling": 0.9296863099775527, + "fos_yielding": 4.114075169229832, + "deflection": 0.0016723920763497078, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.292)" + }, + "parent_node_id": "node_437", + "improvement_over_parent": null + }, + "node_439": { + "node_id": "node_439", + "content": "MODIFICATION: Increase 4 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.01 kg\n Factor of Safety: 0.88\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.00511824816573, + "fos_buckling": 0.8759669747699276, + "fos_yielding": 4.1092632848551345, + "deflection": 0.0016695400266043391, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.513)" + }, + "parent_node_id": "node_438", + "improvement_over_parent": null + }, + "node_440": { + "node_id": "node_440", + "content": "MODIFICATION: Increase 0 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.07 kg\n Factor of Safety: 1.33\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.06576423182312, + "fos_buckling": 1.3271569657126903, + "fos_yielding": 4.137737308947953, + "deflection": 0.0015554767564488526, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.560)" + }, + "parent_node_id": "node_439", + "improvement_over_parent": null + }, + "node_441": { + "node_id": "node_441", + "content": "MODIFICATION: Increase 1 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.07 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.07045513596165, + "fos_buckling": 1.323012028884544, + "fos_yielding": 4.137562922837563, + "deflection": 0.001496852638398958, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.227)" + }, + "parent_node_id": "node_440", + "improvement_over_parent": null + }, + "node_442": { + "node_id": "node_442", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24479801269032, + "fos_buckling": 1.5680358166588373, + "fos_yielding": 4.15130231590534, + "deflection": 0.0014506427055491734, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_441", + "improvement_over_parent": null + }, + "node_443": { + "node_id": "node_443", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_442", + "improvement_over_parent": null + }, + "node_444": { + "node_id": "node_444", + "content": "INITIAL DESIGN (Trace 63)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 190.03 kg\n Factor of Safety: 0.51\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.0333845833345, + "fos_buckling": 0.5077765646464261, + "fos_yielding": 4.049822494575287, + "deflection": 0.001953315367494425, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_445": { + "node_id": "node_445", + "content": "MODIFICATION: Increase 0 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 194.77 kg\n Factor of Safety: 0.58\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.76590817461536, + "fos_buckling": 0.5796644268543757, + "fos_yielding": 4.067180837728441, + "deflection": 0.0018814718803550326, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.393)" + }, + "parent_node_id": "node_444", + "improvement_over_parent": null + }, + "node_446": { + "node_id": "node_446", + "content": "MODIFICATION: Increase 10 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 202.20 kg\n Factor of Safety: 0.56\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.20468909994003, + "fos_buckling": 0.561711994892809, + "fos_yielding": 4.063249209753563, + "deflection": 0.0018010541112476381, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.232)" + }, + "parent_node_id": "node_445", + "improvement_over_parent": null + }, + "node_447": { + "node_id": "node_447", + "content": "MODIFICATION: Increase 7 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.78 kg\n Factor of Safety: 1.05\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.7799528454234, + "fos_buckling": 1.0526188562464727, + "fos_yielding": 4.123270044219758, + "deflection": 0.00156030627622719, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.550)" + }, + "parent_node_id": "node_446", + "improvement_over_parent": null + }, + "node_448": { + "node_id": "node_448", + "content": "MODIFICATION: Increase 7 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26104622339267, + "fos_buckling": 1.567997113432411, + "fos_yielding": 4.151357451011244, + "deflection": 0.0014503861507895446, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.305)" + }, + "parent_node_id": "node_447", + "improvement_over_parent": null + }, + "node_449": { + "node_id": "node_449", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_448", + "improvement_over_parent": null + }, + "node_450": { + "node_id": "node_450", + "content": "INITIAL DESIGN (Trace 64)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 176.73 kg\n Factor of Safety: 1.16\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.73199493039925, + "fos_buckling": 1.1606505766049326, + "fos_yielding": 3.3268005785628585, + "deflection": 0.0017866585373189352, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_451": { + "node_id": "node_451", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.12 kg\n Factor of Safety: 1.38\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.11746532418044, + "fos_buckling": 1.3837444334031241, + "fos_yielding": 4.074411757002129, + "deflection": 0.0014652612548999536, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.244)" + }, + "parent_node_id": "node_450", + "improvement_over_parent": null + }, + "node_452": { + "node_id": "node_452", + "content": "MODIFICATION: Increase 8 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.61 kg\n Factor of Safety: 1.38\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.61084427404614, + "fos_buckling": 1.3842882998762653, + "fos_yielding": 4.076013162506581, + "deflection": 0.0014620500685289528, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.447)" + }, + "parent_node_id": "node_451", + "improvement_over_parent": null + }, + "node_453": { + "node_id": "node_453", + "content": "MODIFICATION: Increase 6 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.40 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.400126615599, + "fos_buckling": 1.5688478170719433, + "fos_yielding": 4.154196325557948, + "deflection": 0.0014494761185376583, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.205)" + }, + "parent_node_id": "node_452", + "improvement_over_parent": null + }, + "node_454": { + "node_id": "node_454", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_453", + "improvement_over_parent": null + }, + "node_455": { + "node_id": "node_455", + "content": "INITIAL DESIGN (Trace 65)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 144.95 kg\n Factor of Safety: 0.05\n Max Deflection: 1.20e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.95345791866256, + "fos_buckling": 0.051929839757189414, + "fos_yielding": 0.991456670199863, + "deflection": 0.011951982017543623, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_456": { + "node_id": "node_456", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 173.74 kg\n Factor of Safety: 0.06\n Max Deflection: 9.97e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.7371409827243, + "fos_buckling": 0.06043825535388663, + "fos_yielding": 1.1928216157706493, + "deflection": 0.009973663381976831, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_455", + "improvement_over_parent": null + }, + "node_457": { + "node_id": "node_457", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 179.89 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.89095572102212, + "fos_buckling": 0.12789526314543792, + "fos_yielding": 2.1484080489237822, + "deflection": 0.004837019029480782, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_456", + "improvement_over_parent": null + }, + "node_458": { + "node_id": "node_458", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 207.97 kg\n Factor of Safety: 1.03\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.9714761734754, + "fos_buckling": 1.0347335082834022, + "fos_yielding": 4.1637669153381776, + "deflection": 0.0016375942377155857, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003638)" + }, + "parent_node_id": "node_457", + "improvement_over_parent": null + }, + "node_459": { + "node_id": "node_459", + "content": "MODIFICATION: Increase 2 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 208.69 kg\n Factor of Safety: 1.04\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.69182874813225, + "fos_buckling": 1.0371225634897567, + "fos_yielding": 4.161578536379168, + "deflection": 0.001636803988315572, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.279)" + }, + "parent_node_id": "node_458", + "improvement_over_parent": null + }, + "node_460": { + "node_id": "node_460", + "content": "MODIFICATION: Increase 10 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28813740021695, + "fos_buckling": 1.5687312788437613, + "fos_yielding": 4.151380027827637, + "deflection": 0.0014501875895120196, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.570)" + }, + "parent_node_id": "node_459", + "improvement_over_parent": null + }, + "node_461": { + "node_id": "node_461", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_460", + "improvement_over_parent": null + }, + "node_462": { + "node_id": "node_462", + "content": "INITIAL DESIGN (Trace 66)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_463": { + "node_id": "node_463", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 202.10 kg\n Factor of Safety: 1.46\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.09682924697734, + "fos_buckling": 1.4589538202046552, + "fos_yielding": 4.196455815373248, + "deflection": 0.0015438938568217914, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_462", + "improvement_over_parent": null + }, + "node_464": { + "node_id": "node_464", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.71 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.709933861738, + "fos_buckling": 1.33906515750896, + "fos_yielding": 4.138240460777092, + "deflection": 0.0014958369339246017, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_463", + "improvement_over_parent": null + }, + "node_465": { + "node_id": "node_465", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25829148183425, + "fos_buckling": 1.5680086641287918, + "fos_yielding": 4.151343032925385, + "deflection": 0.0014504401185121613, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_464", + "improvement_over_parent": null + }, + "node_466": { + "node_id": "node_466", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_465", + "improvement_over_parent": null + }, + "node_467": { + "node_id": "node_467", + "content": "INITIAL DESIGN (Trace 67)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n\nPerformance:\n Mass: 126.24 kg\n Factor of Safety: 0.76\n Max Deflection: 2.71e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.24416956989499, + "fos_buckling": 0.7563162999016351, + "fos_yielding": 2.659839893428277, + "deflection": 0.0027057783091290048, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_468": { + "node_id": "node_468", + "content": "MODIFICATION: Increase 10 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 135.75 kg\n Factor of Safety: 0.78\n Max Deflection: 2.39e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.74728156329326, + "fos_buckling": 0.7835078461029441, + "fos_yielding": 2.654236093597952, + "deflection": 0.00239240063107283, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.562)" + }, + "parent_node_id": "node_467", + "improvement_over_parent": null + }, + "node_469": { + "node_id": "node_469", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 170.73 kg\n Factor of Safety: 0.95\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.72865132276291, + "fos_buckling": 0.9523729227245362, + "fos_yielding": 3.333926134684248, + "deflection": 0.0019059062474067248, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_468", + "improvement_over_parent": null + }, + "node_470": { + "node_id": "node_470", + "content": "MODIFICATION: Increase 7 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 176.93 kg\n Factor of Safety: 1.30\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.93004053122294, + "fos_buckling": 1.2975091621884596, + "fos_yielding": 3.351369623482495, + "deflection": 0.001801143177151005, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.230)" + }, + "parent_node_id": "node_469", + "improvement_over_parent": null + }, + "node_471": { + "node_id": "node_471", + "content": "MODIFICATION: Increase 9 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 180.14 kg\n Factor of Safety: 1.31\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.14057183583762, + "fos_buckling": 1.3122319735998236, + "fos_yielding": 3.352915492319981, + "deflection": 0.0017928267434569128, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.499)" + }, + "parent_node_id": "node_470", + "improvement_over_parent": null + }, + "node_472": { + "node_id": "node_472", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.45 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.45057321672508, + "fos_buckling": 1.568552129114524, + "fos_yielding": 4.155798051657109, + "deflection": 0.0014492826972553423, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.264)" + }, + "parent_node_id": "node_471", + "improvement_over_parent": null + }, + "node_473": { + "node_id": "node_473", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_472", + "improvement_over_parent": null + }, + "node_474": { + "node_id": "node_474", + "content": "INITIAL DESIGN (Trace 68)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 174.46 kg\n Factor of Safety: 0.80\n Max Deflection: 2.12e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.4625806043318, + "fos_buckling": 0.7954451121789299, + "fos_yielding": 4.19645566016795, + "deflection": 0.002116774332945764, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_475": { + "node_id": "node_475", + "content": "MODIFICATION: Increase 3 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 176.34 kg\n Factor of Safety: 0.80\n Max Deflection: 2.12e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.34417573889473, + "fos_buckling": 0.7952865217700035, + "fos_yielding": 4.19645566016795, + "deflection": 0.002117193574117331, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.626)" + }, + "parent_node_id": "node_474", + "improvement_over_parent": null + }, + "node_476": { + "node_id": "node_476", + "content": "MODIFICATION: Increase 7 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 184.19 kg\n Factor of Safety: 1.06\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.19487548073687, + "fos_buckling": 1.0632801683348316, + "fos_yielding": 4.19645566016795, + "deflection": 0.001843482305470645, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.401)" + }, + "parent_node_id": "node_475", + "improvement_over_parent": null + }, + "node_477": { + "node_id": "node_477", + "content": "MODIFICATION: Increase 0 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 187.06 kg\n Factor of Safety: 1.06\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.0636476012046, + "fos_buckling": 1.0629573254049585, + "fos_yielding": 4.19645566016795, + "deflection": 0.0017921703060148697, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.209)" + }, + "parent_node_id": "node_476", + "improvement_over_parent": null + }, + "node_478": { + "node_id": "node_478", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 195.68 kg\n Factor of Safety: 0.70\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.67675221596525, + "fos_buckling": 0.7031715966746842, + "fos_yielding": 4.088924207697846, + "deflection": 0.0016920855413712801, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_477", + "improvement_over_parent": null + }, + "node_479": { + "node_id": "node_479", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 208.23 kg\n Factor of Safety: 0.78\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.2251098360615, + "fos_buckling": 0.7840643594403265, + "fos_yielding": 4.099536592653883, + "deflection": 0.0016545582119182841, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_478", + "improvement_over_parent": null + }, + "node_480": { + "node_id": "node_480", + "content": "MODIFICATION: Increase 7 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33316031853713, + "fos_buckling": 1.5680597557046891, + "fos_yielding": 4.151519478637086, + "deflection": 0.001449746897231225, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.580)" + }, + "parent_node_id": "node_479", + "improvement_over_parent": null + }, + "node_481": { + "node_id": "node_481", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_480", + "improvement_over_parent": null + }, + "node_482": { + "node_id": "node_482", + "content": "INITIAL DESIGN (Trace 69)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 127.44 kg\n Factor of Safety: 0.05\n Max Deflection: 8.83e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.44470363259802, + "fos_buckling": 0.04559927944323379, + "fos_yielding": 1.0604890766498793, + "deflection": 0.008834219693877128, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_483": { + "node_id": "node_483", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 146.27 kg\n Factor of Safety: 0.05\n Max Deflection: 7.70e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.27179716938224, + "fos_buckling": 0.05131564236997639, + "fos_yielding": 1.215462948695465, + "deflection": 0.007702540026428243, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.159)" + }, + "parent_node_id": "node_482", + "improvement_over_parent": null + }, + "node_484": { + "node_id": "node_484", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 182.08 kg\n Factor of Safety: 1.26\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.07631065156488, + "fos_buckling": 1.2602940466737043, + "fos_yielding": 3.4158694566080574, + "deflection": 0.0017694642358706382, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004657)" + }, + "parent_node_id": "node_483", + "improvement_over_parent": null + }, + "node_485": { + "node_id": "node_485", + "content": "MODIFICATION: Increase 5 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 183.35 kg\n Factor of Safety: 1.33\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.35310971553173, + "fos_buckling": 1.3325918959701843, + "fos_yielding": 3.4120012975987923, + "deflection": 0.0017617242097061746, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.364)" + }, + "parent_node_id": "node_484", + "improvement_over_parent": null + }, + "node_486": { + "node_id": "node_486", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25936221467907, + "fos_buckling": 1.5680928211491372, + "fos_yielding": 4.151647094765767, + "deflection": 0.00145046842406238, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_485", + "improvement_over_parent": null + }, + "node_487": { + "node_id": "node_487", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_486", + "improvement_over_parent": null + }, + "node_488": { + "node_id": "node_488", + "content": "INITIAL DESIGN (Trace 70)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 150.78 kg\n Factor of Safety: 0.98\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.77911874544657, + "fos_buckling": 0.979309038413504, + "fos_yielding": 2.3916237423879263, + "deflection": 0.0021110051090380355, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_489": { + "node_id": "node_489", + "content": "MODIFICATION: Increase 3 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 155.70 kg\n Factor of Safety: 1.02\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.7037173542698, + "fos_buckling": 1.0204899051218408, + "fos_yielding": 2.9571358209565357, + "deflection": 0.0020871539317090103, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.261)" + }, + "parent_node_id": "node_488", + "improvement_over_parent": null + }, + "node_490": { + "node_id": "node_490", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 174.11 kg\n Factor of Safety: 1.12\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.10869789451385, + "fos_buckling": 1.1159609731172804, + "fos_yielding": 3.305526870210914, + "deflection": 0.0018689078504502913, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_489", + "improvement_over_parent": null + }, + "node_491": { + "node_id": "node_491", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 178.24 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.24136259478908, + "fos_buckling": 1.300998377679145, + "fos_yielding": 3.3163884588991763, + "deflection": 0.0018115926163938083, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001861)" + }, + "parent_node_id": "node_490", + "improvement_over_parent": null + }, + "node_492": { + "node_id": "node_492", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2136183863861, + "fos_buckling": 1.5677966741854596, + "fos_yielding": 4.149831204415389, + "deflection": 0.0014507059450983948, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.277)" + }, + "parent_node_id": "node_491", + "improvement_over_parent": null + }, + "node_493": { + "node_id": "node_493", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_492", + "improvement_over_parent": null + }, + "node_494": { + "node_id": "node_494", + "content": "INITIAL DESIGN (Trace 71)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 87.31 kg\n Factor of Safety: 0.06\n Max Deflection: 9.91e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 87.30586562412496, + "fos_buckling": 0.05849506543321201, + "fos_yielding": 0.8882127645765888, + "deflection": 0.00990754306560162, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_495": { + "node_id": "node_495", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n\nPerformance:\n Mass: 91.70 kg\n Factor of Safety: 0.06\n Max Deflection: 9.88e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 91.70227725008331, + "fos_buckling": 0.05846765443950135, + "fos_yielding": 0.887796544946382, + "deflection": 0.009883276640524564, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001251)" + }, + "parent_node_id": "node_494", + "improvement_over_parent": null + }, + "node_496": { + "node_id": "node_496", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n\nPerformance:\n Mass: 105.40 kg\n Factor of Safety: 0.07\n Max Deflection: 8.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 105.39700156522571, + "fos_buckling": 0.06654639273946117, + "fos_yielding": 1.0207791119549308, + "deflection": 0.008602985750272915, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.157)" + }, + "parent_node_id": "node_495", + "improvement_over_parent": null + }, + "node_497": { + "node_id": "node_497", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 134.41 kg\n Factor of Safety: 0.08\n Max Deflection: 6.75e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.41410125619785, + "fos_buckling": 0.08310290765624812, + "fos_yielding": 1.3030568755152792, + "deflection": 0.006752068238640271, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.294)" + }, + "parent_node_id": "node_496", + "improvement_over_parent": null + }, + "node_498": { + "node_id": "node_498", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 161.78 kg\n Factor of Safety: 0.10\n Max Deflection: 5.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.78036537394922, + "fos_buckling": 0.09801799454413222, + "fos_yielding": 1.5700364253697028, + "deflection": 0.005614627494159056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.221)" + }, + "parent_node_id": "node_497", + "improvement_over_parent": null + }, + "node_499": { + "node_id": "node_499", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 200.20 kg\n Factor of Safety: 1.43\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.19575149935724, + "fos_buckling": 1.4342417516517942, + "fos_yielding": 3.739814712224165, + "deflection": 0.001610591559422873, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005091)" + }, + "parent_node_id": "node_498", + "improvement_over_parent": null + }, + "node_500": { + "node_id": "node_500", + "content": "MODIFICATION: Increase 3 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 201.08 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.08259563129417, + "fos_buckling": 1.4396054338198296, + "fos_yielding": 3.7404223206575744, + "deflection": 0.0016081473150104317, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.255)" + }, + "parent_node_id": "node_499", + "improvement_over_parent": null + }, + "node_501": { + "node_id": "node_501", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.223597313683, + "fos_buckling": 1.5679017259563568, + "fos_yielding": 4.150635644101487, + "deflection": 0.001450660496920396, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.121)" + }, + "parent_node_id": "node_500", + "improvement_over_parent": null + }, + "node_502": { + "node_id": "node_502", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_501", + "improvement_over_parent": null + }, + "node_503": { + "node_id": "node_503", + "content": "INITIAL DESIGN (Trace 72)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 155.86 kg\n Factor of Safety: 1.00\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.86215399225642, + "fos_buckling": 1.0049842008925884, + "fos_yielding": 3.107954361111834, + "deflection": 0.0020970623199491126, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_504": { + "node_id": "node_504", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 180.17 kg\n Factor of Safety: 1.16\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.17218086543667, + "fos_buckling": 1.1556182510152102, + "fos_yielding": 3.5890894901251347, + "deflection": 0.0018162240896777884, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_503", + "improvement_over_parent": null + }, + "node_505": { + "node_id": "node_505", + "content": "MODIFICATION: Increase 5 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 181.97 kg\n Factor of Safety: 1.39\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.96563232757092, + "fos_buckling": 1.3873283510133345, + "fos_yielding": 3.583355775684603, + "deflection": 0.0018056958185475771, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.553)" + }, + "parent_node_id": "node_504", + "improvement_over_parent": null + }, + "node_506": { + "node_id": "node_506", + "content": "MODIFICATION: Increase 9 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 185.97 kg\n Factor of Safety: 1.16\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.97320737061486, + "fos_buckling": 1.163880431996893, + "fos_yielding": 3.5857676039238235, + "deflection": 0.0017902464011008625, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.637)" + }, + "parent_node_id": "node_505", + "improvement_over_parent": null + }, + "node_507": { + "node_id": "node_507", + "content": "MODIFICATION: Increase 1 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 190.47 kg\n Factor of Safety: 1.39\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.47192105846523, + "fos_buckling": 1.3879956047404474, + "fos_yielding": 3.5818978713475795, + "deflection": 0.0016836980454887171, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.458)" + }, + "parent_node_id": "node_506", + "improvement_over_parent": null + }, + "node_508": { + "node_id": "node_508", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.02 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.01538065468753, + "fos_buckling": 1.568231920126573, + "fos_yielding": 4.153619065512287, + "deflection": 0.0014539653186917247, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_507", + "improvement_over_parent": null + }, + "node_509": { + "node_id": "node_509", + "content": "MODIFICATION: Increase 8 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.06 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.0591451304699, + "fos_buckling": 1.566896072293855, + "fos_yielding": 4.147856005118499, + "deflection": 0.001451644760872985, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.342)" + }, + "parent_node_id": "node_508", + "improvement_over_parent": null + }, + "node_510": { + "node_id": "node_510", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_509", + "improvement_over_parent": null + }, + "node_511": { + "node_id": "node_511", + "content": "INITIAL DESIGN (Trace 73)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0022)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 113.51 kg\n Factor of Safety: 0.45\n Max Deflection: 2.92e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.51130858286362, + "fos_buckling": 0.4503722851775843, + "fos_yielding": 2.2358422210794675, + "deflection": 0.0029196027096928885, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_512": { + "node_id": "node_512", + "content": "MODIFICATION: Increase 7 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 119.37 kg\n Factor of Safety: 0.81\n Max Deflection: 2.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.37132785664105, + "fos_buckling": 0.8141426166541306, + "fos_yielding": 2.2518572753364094, + "deflection": 0.0026745337995035907, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.346)" + }, + "parent_node_id": "node_511", + "improvement_over_parent": null + }, + "node_513": { + "node_id": "node_513", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 152.77 kg\n Factor of Safety: 1.01\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.7672669596436, + "fos_buckling": 1.0122659610525697, + "fos_yielding": 2.879809881757119, + "deflection": 0.0020944740750256344, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.297)" + }, + "parent_node_id": "node_512", + "improvement_over_parent": null + }, + "node_514": { + "node_id": "node_514", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 170.88 kg\n Factor of Safety: 1.11\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.88277684917745, + "fos_buckling": 1.1146877653733382, + "fos_yielding": 3.2200582035620484, + "deflection": 0.0018746750104625758, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_513", + "improvement_over_parent": null + }, + "node_515": { + "node_id": "node_515", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.59 kg\n Factor of Safety: 1.38\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.59291487193838, + "fos_buckling": 1.378199866817164, + "fos_yielding": 4.15231432749155, + "deflection": 0.0014569891044931488, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_514", + "improvement_over_parent": null + }, + "node_516": { + "node_id": "node_516", + "content": "MODIFICATION: Increase 3 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.94 kg\n Factor of Safety: 1.41\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.93515532672313, + "fos_buckling": 1.4107163914605405, + "fos_yielding": 4.153205452690921, + "deflection": 0.0014536706834126886, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.385)" + }, + "parent_node_id": "node_515", + "improvement_over_parent": null + }, + "node_517": { + "node_id": "node_517", + "content": "MODIFICATION: Increase 2 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.08 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.08355348783073, + "fos_buckling": 1.567044587258648, + "fos_yielding": 4.148232668242748, + "deflection": 0.001451555630980777, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.524)" + }, + "parent_node_id": "node_516", + "improvement_over_parent": null + }, + "node_518": { + "node_id": "node_518", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_517", + "improvement_over_parent": null + }, + "node_519": { + "node_id": "node_519", + "content": "INITIAL DESIGN (Trace 74)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_520": { + "node_id": "node_520", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 114.86 kg\n Factor of Safety: 0.35\n Max Deflection: 5.72e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.85739246637607, + "fos_buckling": 0.3493363471216733, + "fos_yielding": 3.187579060748972, + "deflection": 5716176203309.077, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001751)" + }, + "parent_node_id": "node_519", + "improvement_over_parent": null + }, + "node_521": { + "node_id": "node_521", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n\nPerformance:\n Mass: 145.49 kg\n Factor of Safety: 1.08\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.4855871090047, + "fos_buckling": 1.0840730311624287, + "fos_yielding": 2.9486026176952556, + "deflection": 0.0021860126120802005, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003940)" + }, + "parent_node_id": "node_520", + "improvement_over_parent": null + }, + "node_522": { + "node_id": "node_522", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 154.30 kg\n Factor of Safety: 1.13\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.29695832807428, + "fos_buckling": 1.1323350172485356, + "fos_yielding": 2.948602617695256, + "deflection": 0.002084709476807758, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002113)" + }, + "parent_node_id": "node_521", + "improvement_over_parent": null + }, + "node_523": { + "node_id": "node_523", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 156.79 kg\n Factor of Safety: 1.17\n Max Deflection: 2.06e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.79312309275082, + "fos_buckling": 1.165071679299056, + "fos_yielding": 2.9189018689877555, + "deflection": 0.002056626927328241, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001344)" + }, + "parent_node_id": "node_522", + "improvement_over_parent": null + }, + "node_524": { + "node_id": "node_524", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n\nPerformance:\n Mass: 202.12 kg\n Factor of Safety: 1.45\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.1243049522553, + "fos_buckling": 1.4456734297394096, + "fos_yielding": 3.759753460979852, + "deflection": 0.0015999503185966854, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.314)" + }, + "parent_node_id": "node_523", + "improvement_over_parent": null + }, + "node_525": { + "node_id": "node_525", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2749216191158, + "fos_buckling": 1.5680846053400075, + "fos_yielding": 4.151612382385592, + "deflection": 0.0014503192464532305, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.115)" + }, + "parent_node_id": "node_524", + "improvement_over_parent": null + }, + "node_526": { + "node_id": "node_526", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_525", + "improvement_over_parent": null + }, + "node_527": { + "node_id": "node_527", + "content": "INITIAL DESIGN (Trace 75)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 160.06 kg\n Factor of Safety: 1.18\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.05512356803874, + "fos_buckling": 1.1770066034353175, + "fos_yielding": 3.243329107268087, + "deflection": 0.0019908997763267767, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_528": { + "node_id": "node_528", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 179.72 kg\n Factor of Safety: 1.30\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.7211479531791, + "fos_buckling": 1.2979609204521263, + "fos_yielding": 3.640879110437016, + "deflection": 0.0017776995628300974, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.133)" + }, + "parent_node_id": "node_527", + "improvement_over_parent": null + }, + "node_529": { + "node_id": "node_529", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 207.20 kg\n Factor of Safety: 1.46\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.20413623332232, + "fos_buckling": 1.4584522437640763, + "fos_yielding": 4.196098988283778, + "deflection": 0.00154755210876834, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_528", + "improvement_over_parent": null + }, + "node_530": { + "node_id": "node_530", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 219.75 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.75249385341857, + "fos_buckling": 1.5227159620848187, + "fos_yielding": 4.196098988283778, + "deflection": 0.0014702874163723214, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_529", + "improvement_over_parent": null + }, + "node_531": { + "node_id": "node_531", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3069011891166, + "fos_buckling": 1.568298566348299, + "fos_yielding": 4.15232579156827, + "deflection": 0.0014501069094226026, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_530", + "improvement_over_parent": null + }, + "node_532": { + "node_id": "node_532", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_531", + "improvement_over_parent": null + }, + "node_533": { + "node_id": "node_533", + "content": "INITIAL DESIGN (Trace 76)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 96.33 kg\n Factor of Safety: 0.76\n Max Deflection: 3.25e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 96.3282059925674, + "fos_buckling": 0.7583966865784517, + "fos_yielding": 1.8858214736939025, + "deflection": 0.003249568530220489, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_534": { + "node_id": "node_534", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 120.03 kg\n Factor of Safety: 0.93\n Max Deflection: 2.61e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.02862272901714, + "fos_buckling": 0.9261849897995659, + "fos_yielding": 2.349168682869085, + "deflection": 0.0026121567488458478, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.258)" + }, + "parent_node_id": "node_533", + "improvement_over_parent": null + }, + "node_535": { + "node_id": "node_535", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 149.84 kg\n Factor of Safety: 1.13\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.84134618535677, + "fos_buckling": 1.126820103921104, + "fos_yielding": 2.9316559751983933, + "deflection": 0.002096705541271367, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.264)" + }, + "parent_node_id": "node_534", + "improvement_over_parent": null + }, + "node_536": { + "node_id": "node_536", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 177.52 kg\n Factor of Safety: 1.30\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.51797866965404, + "fos_buckling": 1.3027465687292648, + "fos_yielding": 3.4720525920215253, + "deflection": 0.0017731553690317832, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_535", + "improvement_over_parent": null + }, + "node_537": { + "node_id": "node_537", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 184.63 kg\n Factor of Safety: 1.34\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.63204754968373, + "fos_buckling": 1.3404254237071285, + "fos_yielding": 3.4356599706989472, + "deflection": 0.0017495507073981393, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002083)" + }, + "parent_node_id": "node_536", + "improvement_over_parent": null + }, + "node_538": { + "node_id": "node_538", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.63 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.6306477982473, + "fos_buckling": 1.5701801584357469, + "fos_yielding": 4.158450431372139, + "deflection": 0.0014480043002858018, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_537", + "improvement_over_parent": null + }, + "node_539": { + "node_id": "node_539", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_538", + "improvement_over_parent": null + }, + "node_540": { + "node_id": "node_540", + "content": "INITIAL DESIGN (Trace 77)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 165.21 kg\n Factor of Safety: 0.94\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.21111196635502, + "fos_buckling": 0.9394910940325676, + "fos_yielding": 3.2572606632809427, + "deflection": 0.002032469085015779, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_541": { + "node_id": "node_541", + "content": "MODIFICATION: Increase 10 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 174.69 kg\n Factor of Safety: 1.28\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.68611535400953, + "fos_buckling": 1.2786752499049698, + "fos_yielding": 3.2511153989379062, + "deflection": 0.0018481039569466454, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.425)" + }, + "parent_node_id": "node_540", + "improvement_over_parent": null + }, + "node_542": { + "node_id": "node_542", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 196.60 kg\n Factor of Safety: 1.41\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.60281974529158, + "fos_buckling": 1.4126840785718286, + "fos_yielding": 3.6575772344752133, + "deflection": 0.0016443542365703028, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.136)" + }, + "parent_node_id": "node_541", + "improvement_over_parent": null + }, + "node_543": { + "node_id": "node_543", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.09 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.087850656559, + "fos_buckling": 1.5668739569968773, + "fos_yielding": 4.1483371241526275, + "deflection": 0.0014515552484278666, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.148)" + }, + "parent_node_id": "node_542", + "improvement_over_parent": null + }, + "node_544": { + "node_id": "node_544", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_543", + "improvement_over_parent": null + }, + "node_545": { + "node_id": "node_545", + "content": "INITIAL DESIGN (Trace 78)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0020)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 95.81 kg\n Factor of Safety: 0.63\n Max Deflection: 3.05e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 95.81405080944431, + "fos_buckling": 0.6317933051004871, + "fos_yielding": 1.4883147841473037, + "deflection": 0.003053708252552966, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_546": { + "node_id": "node_546", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 125.40 kg\n Factor of Safety: 0.81\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.40477306466337, + "fos_buckling": 0.8148239780822577, + "fos_yielding": 1.954539982153495, + "deflection": 0.002343495054745924, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.326)" + }, + "parent_node_id": "node_545", + "improvement_over_parent": null + }, + "node_547": { + "node_id": "node_547", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 150.62 kg\n Factor of Safety: 0.97\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.61930265020027, + "fos_buckling": 0.9662248042546536, + "fos_yielding": 2.354636615913469, + "deflection": 0.001958567103341808, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_546", + "improvement_over_parent": null + }, + "node_548": { + "node_id": "node_548", + "content": "MODIFICATION: Increase 4 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 158.44 kg\n Factor of Safety: 1.19\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.4437220868516, + "fos_buckling": 1.1922963268898945, + "fos_yielding": 3.2910942397468093, + "deflection": 0.001958567103341808, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.427)" + }, + "parent_node_id": "node_547", + "improvement_over_parent": null + }, + "node_549": { + "node_id": "node_549", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 201.75 kg\n Factor of Safety: 1.46\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.75291479153984, + "fos_buckling": 1.4569999548669434, + "fos_yielding": 4.188504191209894, + "deflection": 0.0015464026933153224, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.300)" + }, + "parent_node_id": "node_548", + "improvement_over_parent": null + }, + "node_550": { + "node_id": "node_550", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 214.30 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.3012724116361, + "fos_buckling": 1.5211985469911034, + "fos_yielding": 4.188504191209894, + "deflection": 0.0014725373385633305, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_549", + "improvement_over_parent": null + }, + "node_551": { + "node_id": "node_551", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 221.53 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.52921333034178, + "fos_buckling": 1.5669925339109478, + "fos_yielding": 4.147216986067308, + "deflection": 0.001454285464437019, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002119)" + }, + "parent_node_id": "node_550", + "improvement_over_parent": null + }, + "node_552": { + "node_id": "node_552", + "content": "MODIFICATION: Increase 8 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0069)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 229.53 kg\n Factor of Safety: 1.57\n Max Deflection: 1.39e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 229.52632147110901, + "fos_buckling": 1.5722489075278774, + "fos_yielding": 4.144092036819649, + "deflection": 0.0013934572751049031, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.211)" + }, + "parent_node_id": "node_551", + "improvement_over_parent": null + }, + "node_553": { + "node_id": "node_553", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_552", + "improvement_over_parent": null + }, + "node_554": { + "node_id": "node_554", + "content": "INITIAL DESIGN (Trace 79)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 185.25 kg\n Factor of Safety: 1.11\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.24771892472526, + "fos_buckling": 1.1081472369142624, + "fos_yielding": 2.743404372380938, + "deflection": 0.001680252669018984, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_555": { + "node_id": "node_555", + "content": "MODIFICATION: Increase 9 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 187.86 kg\n Factor of Safety: 1.11\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.8587864784284, + "fos_buckling": 1.1085395334022892, + "fos_yielding": 2.7443755681432616, + "deflection": 0.0016743588396812904, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.337)" + }, + "parent_node_id": "node_554", + "improvement_over_parent": null + }, + "node_556": { + "node_id": "node_556", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.45 kg\n Factor of Safety: 1.25\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.45243846811826, + "fos_buckling": 1.2481701838633283, + "fos_yielding": 3.140629192615959, + "deflection": 0.0014696088776928332, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_555", + "improvement_over_parent": null + }, + "node_557": { + "node_id": "node_557", + "content": "MODIFICATION: Increase 4 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2528273548687, + "fos_buckling": 1.567911364545595, + "fos_yielding": 4.152047898436194, + "deflection": 0.001450534370037622, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.368)" + }, + "parent_node_id": "node_556", + "improvement_over_parent": null + }, + "node_558": { + "node_id": "node_558", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_557", + "improvement_over_parent": null + }, + "node_559": { + "node_id": "node_559", + "content": "INITIAL DESIGN (Trace 80)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 153.49 kg\n Factor of Safety: 1.18\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.48730921206914, + "fos_buckling": 1.1827769885144064, + "fos_yielding": 3.2342182837513973, + "deflection": 0.002195592845271919, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_560": { + "node_id": "node_560", + "content": "MODIFICATION: Increase 7 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 155.44 kg\n Factor of Safety: 1.18\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.44014544926875, + "fos_buckling": 1.1830237099143008, + "fos_yielding": 3.2342182837513973, + "deflection": 0.0021955411715058053, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.271)" + }, + "parent_node_id": "node_559", + "improvement_over_parent": null + }, + "node_561": { + "node_id": "node_561", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 171.58 kg\n Factor of Safety: 1.29\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.58142157068636, + "fos_buckling": 1.2870166158199128, + "fos_yielding": 3.5687691289283894, + "deflection": 0.001989188125476688, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.112)" + }, + "parent_node_id": "node_560", + "improvement_over_parent": null + }, + "node_562": { + "node_id": "node_562", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 178.91 kg\n Factor of Safety: 1.30\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.90717177833773, + "fos_buckling": 1.298443946033227, + "fos_yielding": 3.597022702017335, + "deflection": 0.0019827833654387493, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002150)" + }, + "parent_node_id": "node_561", + "improvement_over_parent": null + }, + "node_563": { + "node_id": "node_563", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.41 kg\n Factor of Safety: 1.48\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.41083846872968, + "fos_buckling": 1.4846508297648424, + "fos_yielding": 4.225932608435087, + "deflection": 0.0016863467083268386, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.193)" + }, + "parent_node_id": "node_562", + "improvement_over_parent": null + }, + "node_564": { + "node_id": "node_564", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 216.56 kg\n Factor of Safety: 1.19\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.5646532070275, + "fos_buckling": 1.191396575474264, + "fos_yielding": 4.156433004985773, + "deflection": 0.0015808809309741955, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_563", + "improvement_over_parent": null + }, + "node_565": { + "node_id": "node_565", + "content": "MODIFICATION: Increase 1 thickness by 66%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1635410669918, + "fos_buckling": 1.5673583148778305, + "fos_yielding": 4.149222127464831, + "deflection": 0.001451066834911592, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.661)" + }, + "parent_node_id": "node_564", + "improvement_over_parent": null + }, + "node_566": { + "node_id": "node_566", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_565", + "improvement_over_parent": null + }, + "node_567": { + "node_id": "node_567", + "content": "INITIAL DESIGN (Trace 81)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 159.83 kg\n Factor of Safety: 0.71\n Max Deflection: 2.12e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.83465210769216, + "fos_buckling": 0.7060984488653806, + "fos_yielding": 3.503628171511557, + "deflection": 0.0021227801077021886, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_568": { + "node_id": "node_568", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 170.55 kg\n Factor of Safety: 0.88\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.54896877911673, + "fos_buckling": 0.879721729147746, + "fos_yielding": 3.518889716238661, + "deflection": 0.002029661174179594, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002606)" + }, + "parent_node_id": "node_567", + "improvement_over_parent": null + }, + "node_569": { + "node_id": "node_569", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 200.01 kg\n Factor of Safety: 1.00\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.01246878777047, + "fos_buckling": 1.002135836347244, + "fos_yielding": 4.119264390904214, + "deflection": 0.0017316207146674638, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.188)" + }, + "parent_node_id": "node_568", + "improvement_over_parent": null + }, + "node_570": { + "node_id": "node_570", + "content": "MODIFICATION: Increase 10 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0043)]\n\nPerformance:\n Mass: 204.26 kg\n Factor of Safety: 1.03\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.25628450969862, + "fos_buckling": 1.0260254894638186, + "fos_yielding": 4.120966259371702, + "deflection": 0.001723759253501551, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.387)" + }, + "parent_node_id": "node_569", + "improvement_over_parent": null + }, + "node_571": { + "node_id": "node_571", + "content": "MODIFICATION: Increase 7 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0043)]\n\nPerformance:\n Mass: 216.32 kg\n Factor of Safety: 1.08\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.31871552797878, + "fos_buckling": 1.0766020396647538, + "fos_yielding": 4.1597502830592985, + "deflection": 0.0015711955983576562, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.420)" + }, + "parent_node_id": "node_570", + "improvement_over_parent": null + }, + "node_572": { + "node_id": "node_572", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_571", + "improvement_over_parent": null + }, + "node_573": { + "node_id": "node_573", + "content": "INITIAL DESIGN (Trace 82)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 124.21 kg\n Factor of Safety: 0.08\n Max Deflection: 1.70e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.20872573881023, + "fos_buckling": 0.07935253536869441, + "fos_yielding": 1.1025534460480146, + "deflection": 17019148757219.44, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_574": { + "node_id": "node_574", + "content": "MODIFICATION: Increase 6 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 127.90 kg\n Factor of Safety: 0.08\n Max Deflection: 1.70e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.89725608636769, + "fos_buckling": 0.07935253536869441, + "fos_yielding": 1.1025534460480146, + "deflection": 17019148757219.44, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.299)" + }, + "parent_node_id": "node_573", + "improvement_over_parent": null + }, + "node_575": { + "node_id": "node_575", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 163.83 kg\n Factor of Safety: 0.96\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.82697158992084, + "fos_buckling": 0.964653840054514, + "fos_yielding": 2.699578403310028, + "deflection": 0.0018574190982384624, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004735)" + }, + "parent_node_id": "node_574", + "improvement_over_parent": null + }, + "node_576": { + "node_id": "node_576", + "content": "MODIFICATION: Increase 1 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 166.80 kg\n Factor of Safety: 0.96\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.7954628461252, + "fos_buckling": 0.964653840054514, + "fos_yielding": 2.699578403310028, + "deflection": 0.0017730962066385169, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.271)" + }, + "parent_node_id": "node_575", + "improvement_over_parent": null + }, + "node_577": { + "node_id": "node_577", + "content": "MODIFICATION: Increase 5 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 168.48 kg\n Factor of Safety: 0.96\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.48168298129468, + "fos_buckling": 0.964653840054514, + "fos_yielding": 2.699578403310028, + "deflection": 0.0017713988490148879, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.520)" + }, + "parent_node_id": "node_576", + "improvement_over_parent": null + }, + "node_578": { + "node_id": "node_578", + "content": "MODIFICATION: Increase 6 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 177.53 kg\n Factor of Safety: 1.17\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.52520984810906, + "fos_buckling": 1.1749026388213082, + "fos_yielding": 3.488406829724728, + "deflection": 0.0017713988490148879, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.587)" + }, + "parent_node_id": "node_577", + "improvement_over_parent": null + }, + "node_579": { + "node_id": "node_579", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 188.09 kg\n Factor of Safety: 1.36\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.09490690723348, + "fos_buckling": 1.361455120508103, + "fos_yielding": 3.499444465170617, + "deflection": 0.0017177758569040487, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002568)" + }, + "parent_node_id": "node_578", + "improvement_over_parent": null + }, + "node_580": { + "node_id": "node_580", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2033634793884, + "fos_buckling": 1.567639802137984, + "fos_yielding": 4.150028257269936, + "deflection": 0.0014507860116373171, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.205)" + }, + "parent_node_id": "node_579", + "improvement_over_parent": null + }, + "node_581": { + "node_id": "node_581", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_580", + "improvement_over_parent": null + }, + "node_582": { + "node_id": "node_582", + "content": "INITIAL DESIGN (Trace 83)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_583": { + "node_id": "node_583", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 163.58 kg\n Factor of Safety: 1.20\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.58437175896825, + "fos_buckling": 1.1997111548356614, + "fos_yielding": 3.316664476482712, + "deflection": 0.002017087824159071, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001455)" + }, + "parent_node_id": "node_582", + "improvement_over_parent": null + }, + "node_584": { + "node_id": "node_584", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 207.21 kg\n Factor of Safety: 1.46\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.21408375502182, + "fos_buckling": 1.4585325209170428, + "fos_yielding": 4.196383196150036, + "deflection": 0.0016016397639174343, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_583", + "improvement_over_parent": null + }, + "node_585": { + "node_id": "node_585", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 210.77 kg\n Factor of Safety: 1.33\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.76849109071983, + "fos_buckling": 1.3340936220391912, + "fos_yielding": 4.139293275509511, + "deflection": 0.0015475513574507692, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_584", + "improvement_over_parent": null + }, + "node_586": { + "node_id": "node_586", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 215.94 kg\n Factor of Safety: 1.56\n Max Deflection: 1.50e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 215.9428339674485, + "fos_buckling": 1.5624143141293507, + "fos_yielding": 4.152200489183049, + "deflection": 0.001500713988391715, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_585", + "improvement_over_parent": null + }, + "node_587": { + "node_id": "node_587", + "content": "MODIFICATION: Increase 1 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 218.67 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 218.67012886141526, + "fos_buckling": 1.5468258295377626, + "fos_yielding": 4.1502781074085435, + "deflection": 0.0014581140841872333, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.202)" + }, + "parent_node_id": "node_586", + "improvement_over_parent": null + }, + "node_588": { + "node_id": "node_588", + "content": "MODIFICATION: Increase 9 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0032)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 220.63 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.62556594602637, + "fos_buckling": 1.5455678291962358, + "fos_yielding": 4.145268834622383, + "deflection": 0.001456103911695172, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.647)" + }, + "parent_node_id": "node_587", + "improvement_over_parent": null + }, + "node_589": { + "node_id": "node_589", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_588", + "improvement_over_parent": null + }, + "node_590": { + "node_id": "node_590", + "content": "INITIAL DESIGN (Trace 84)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n\nPerformance:\n Mass: 135.86 kg\n Factor of Safety: 0.60\n Max Deflection: 2.77e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.8566114910671, + "fos_buckling": 0.6031536577545333, + "fos_yielding": 2.988571066854774, + "deflection": 0.0027650440516647523, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_591": { + "node_id": "node_591", + "content": "MODIFICATION: Increase 8 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 140.34 kg\n Factor of Safety: 0.76\n Max Deflection: 2.47e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.34103505245895, + "fos_buckling": 0.7629790564772814, + "fos_yielding": 2.9885710668547754, + "deflection": 0.0024726539612947717, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.299)" + }, + "parent_node_id": "node_590", + "improvement_over_parent": null + }, + "node_592": { + "node_id": "node_592", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n\nPerformance:\n Mass: 142.87 kg\n Factor of Safety: 0.79\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.87207187588805, + "fos_buckling": 0.7894610739358058, + "fos_yielding": 3.0183640032113854, + "deflection": 0.0024608323811446337, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001364)" + }, + "parent_node_id": "node_591", + "improvement_over_parent": null + }, + "node_593": { + "node_id": "node_593", + "content": "MODIFICATION: Increase 9 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0021)]\n\nPerformance:\n Mass: 144.12 kg\n Factor of Safety: 0.79\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.12314989460722, + "fos_buckling": 0.7908418201539291, + "fos_yielding": 3.0197693628259428, + "deflection": 0.002460489878831977, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.546)" + }, + "parent_node_id": "node_592", + "improvement_over_parent": null + }, + "node_594": { + "node_id": "node_594", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n\nPerformance:\n Mass: 177.91 kg\n Factor of Safety: 0.96\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.90519524543706, + "fos_buckling": 0.9610510651636653, + "fos_yielding": 3.7216403614339457, + "deflection": 0.0019929988719931506, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.253)" + }, + "parent_node_id": "node_593", + "improvement_over_parent": null + }, + "node_595": { + "node_id": "node_595", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 183.31 kg\n Factor of Safety: 0.71\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.3056887220319, + "fos_buckling": 0.709040931192718, + "fos_yielding": 3.6502947435151434, + "deflection": 0.0018672632749858588, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002225)" + }, + "parent_node_id": "node_594", + "improvement_over_parent": null + }, + "node_596": { + "node_id": "node_596", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0030)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 208.93 kg\n Factor of Safety: 0.80\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.93482363330017, + "fos_buckling": 0.800017483266553, + "fos_yielding": 4.156478206899399, + "deflection": 0.0016390806898653007, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.153)" + }, + "parent_node_id": "node_595", + "improvement_over_parent": null + }, + "node_597": { + "node_id": "node_597", + "content": "MODIFICATION: Increase 3 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0101)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0030)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 228.22 kg\n Factor of Safety: 0.85\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.21560155529187, + "fos_buckling": 0.8489960655953206, + "fos_yielding": 4.743622996347265, + "deflection": 0.0016173931647998948, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.647)" + }, + "parent_node_id": "node_596", + "improvement_over_parent": null + }, + "node_598": { + "node_id": "node_598", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_597", + "improvement_over_parent": null + }, + "node_599": { + "node_id": "node_599", + "content": "INITIAL DESIGN (Trace 85)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 140.06 kg\n Factor of Safety: 0.11\n Max Deflection: 5.94e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.05912813198705, + "fos_buckling": 0.10796293646847399, + "fos_yielding": 1.7548189578078441, + "deflection": 0.005943164430653872, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_600": { + "node_id": "node_600", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 147.07 kg\n Factor of Safety: 0.11\n Max Deflection: 5.93e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.0717184510495, + "fos_buckling": 0.1078825589359139, + "fos_yielding": 1.7535125092938264, + "deflection": 0.00592879185849051, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002051)" + }, + "parent_node_id": "node_599", + "improvement_over_parent": null + }, + "node_601": { + "node_id": "node_601", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 162.91 kg\n Factor of Safety: 0.12\n Max Deflection: 5.36e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.9066632997495, + "fos_buckling": 0.11753727155074363, + "fos_yielding": 1.9401195414101138, + "deflection": 0.005357085284518722, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.117)" + }, + "parent_node_id": "node_600", + "improvement_over_parent": null + }, + "node_602": { + "node_id": "node_602", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 180.69 kg\n Factor of Safety: 0.13\n Max Deflection: 4.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.69445252992514, + "fos_buckling": 0.1279338892627018, + "fos_yielding": 2.1492385497544864, + "deflection": 0.004834372720546834, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_601", + "improvement_over_parent": null + }, + "node_603": { + "node_id": "node_603", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.34642088129854, + "fos_buckling": 1.568163173174616, + "fos_yielding": 4.153343672325317, + "deflection": 0.0014499188706583184, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_602", + "improvement_over_parent": null + }, + "node_604": { + "node_id": "node_604", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_603", + "improvement_over_parent": null + }, + "node_605": { + "node_id": "node_605", + "content": "INITIAL DESIGN (Trace 86)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_606": { + "node_id": "node_606", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 173.21 kg\n Factor of Safety: 0.04\n Max Deflection: 6.28e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.20932528740022, + "fos_buckling": 0.03680967685734729, + "fos_yielding": 0.5512767230240074, + "deflection": 62803782277561.21, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001652)" + }, + "parent_node_id": "node_605", + "improvement_over_parent": null + }, + "node_607": { + "node_id": "node_607", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 216.82 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 216.82037953016092, + "fos_buckling": 1.5229215790717419, + "fos_yielding": 4.195876677109285, + "deflection": 0.0014702659857861622, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_606", + "improvement_over_parent": null + }, + "node_608": { + "node_id": "node_608", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 220.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.37478686585894, + "fos_buckling": 1.5660622522898697, + "fos_yielding": 4.159968040477322, + "deflection": 0.0014539190686261153, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_607", + "improvement_over_parent": null + }, + "node_609": { + "node_id": "node_609", + "content": "MODIFICATION: Increase 8 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26277566301547, + "fos_buckling": 1.5680098090718473, + "fos_yielding": 4.151344880687507, + "deflection": 0.0014504149527900044, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.553)" + }, + "parent_node_id": "node_608", + "improvement_over_parent": null + }, + "node_610": { + "node_id": "node_610", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_609", + "improvement_over_parent": null + }, + "node_611": { + "node_id": "node_611", + "content": "INITIAL DESIGN (Trace 87)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 140.28 kg\n Factor of Safety: 0.97\n Max Deflection: 2.31e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.28274148608068, + "fos_buckling": 0.9651732536989798, + "fos_yielding": 2.809758710586159, + "deflection": 0.0023069604790447477, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_612": { + "node_id": "node_612", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 142.66 kg\n Factor of Safety: 0.96\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.66159912168968, + "fos_buckling": 0.9587540434033276, + "fos_yielding": 2.7857895479339794, + "deflection": 0.0022834269679865736, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001277)" + }, + "parent_node_id": "node_611", + "improvement_over_parent": null + }, + "node_613": { + "node_id": "node_613", + "content": "MODIFICATION: Increase 9 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 146.76 kg\n Factor of Safety: 1.09\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.7600810700003, + "fos_buckling": 1.0861840066089523, + "fos_yielding": 2.7832403470258775, + "deflection": 0.002182325590142766, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.183)" + }, + "parent_node_id": "node_612", + "improvement_over_parent": null + }, + "node_614": { + "node_id": "node_614", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 181.95 kg\n Factor of Safety: 1.31\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.9509978887038, + "fos_buckling": 1.3083854303755806, + "fos_yielding": 3.447473108581751, + "deflection": 0.0017642313355848284, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.258)" + }, + "parent_node_id": "node_613", + "improvement_over_parent": null + }, + "node_615": { + "node_id": "node_615", + "content": "MODIFICATION: Increase 10 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 182.53 kg\n Factor of Safety: 1.31\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.53402880517854, + "fos_buckling": 1.3078992966359406, + "fos_yielding": 3.4459213648625657, + "deflection": 0.0017633500160206858, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.217)" + }, + "parent_node_id": "node_614", + "improvement_over_parent": null + }, + "node_616": { + "node_id": "node_616", + "content": "MODIFICATION: Increase 5 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0056)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 187.14 kg\n Factor of Safety: 1.20\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.1407310317456, + "fos_buckling": 1.1970220846884423, + "fos_yielding": 3.4487608524530153, + "deflection": 0.0017519408843409202, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.200)" + }, + "parent_node_id": "node_615", + "improvement_over_parent": null + }, + "node_617": { + "node_id": "node_617", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0069)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0056)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0024)]\n\nPerformance:\n Mass: 225.74 kg\n Factor of Safety: 1.43\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 225.73678179698715, + "fos_buckling": 1.42577004857649, + "fos_yielding": 4.1585756931877365, + "deflection": 0.0014551549143657799, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.227)" + }, + "parent_node_id": "node_616", + "improvement_over_parent": null + }, + "node_618": { + "node_id": "node_618", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_617", + "improvement_over_parent": null + }, + "node_619": { + "node_id": "node_619", + "content": "INITIAL DESIGN (Trace 88)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 212.17 kg\n Factor of Safety: 1.37\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.1729401089759, + "fos_buckling": 1.3689359714707467, + "fos_yielding": 4.1665872029000015, + "deflection": 0.0015347758572592228, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_620": { + "node_id": "node_620", + "content": "MODIFICATION: Increase 8 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.93 kg\n Factor of Safety: 1.32\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.92590723073295, + "fos_buckling": 1.3224984749123114, + "fos_yielding": 4.160121592528656, + "deflection": 0.0015325228550989787, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.515)" + }, + "parent_node_id": "node_619", + "improvement_over_parent": null + }, + "node_621": { + "node_id": "node_621", + "content": "MODIFICATION: Increase 9 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.31 kg\n Factor of Safety: 1.26\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.31381882681657, + "fos_buckling": 1.2566505148618217, + "fos_yielding": 4.161642552028116, + "deflection": 0.0015281747608759419, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.258)" + }, + "parent_node_id": "node_620", + "improvement_over_parent": null + }, + "node_622": { + "node_id": "node_622", + "content": "MODIFICATION: Increase 5 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.08 kg\n Factor of Safety: 1.41\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.07718664017824, + "fos_buckling": 1.411386918704943, + "fos_yielding": 4.155194314271899, + "deflection": 0.0015190407285079674, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.441)" + }, + "parent_node_id": "node_621", + "improvement_over_parent": null + }, + "node_623": { + "node_id": "node_623", + "content": "MODIFICATION: Increase 1 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26517785760618, + "fos_buckling": 1.567969961496852, + "fos_yielding": 4.151340271090183, + "deflection": 0.0014503818847044318, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.344)" + }, + "parent_node_id": "node_622", + "improvement_over_parent": null + }, + "node_624": { + "node_id": "node_624", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_623", + "improvement_over_parent": null + }, + "node_625": { + "node_id": "node_625", + "content": "INITIAL DESIGN (Trace 89)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 119.10 kg\n Factor of Safety: 0.45\n Max Deflection: 2.77e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.09902279346886, + "fos_buckling": 0.44580321212666735, + "fos_yielding": 2.5175614868053073, + "deflection": 0.0027722910892864733, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_626": { + "node_id": "node_626", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 143.18 kg\n Factor of Safety: 0.52\n Max Deflection: 2.31e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.18439169338697, + "fos_buckling": 0.5246602585320015, + "fos_yielding": 3.023552722842311, + "deflection": 0.0023077849747237516, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_625", + "improvement_over_parent": null + }, + "node_627": { + "node_id": "node_627", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 164.63 kg\n Factor of Safety: 0.59\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.6304979636654, + "fos_buckling": 0.5918036838872479, + "fos_yielding": 3.4731414656384425, + "deflection": 0.0020085223917542068, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.161)" + }, + "parent_node_id": "node_626", + "improvement_over_parent": null + }, + "node_628": { + "node_id": "node_628", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 175.29 kg\n Factor of Safety: 0.65\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.29157371346938, + "fos_buckling": 0.6519483470483417, + "fos_yielding": 3.481495033478132, + "deflection": 0.0019676817127242717, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002592)" + }, + "parent_node_id": "node_627", + "improvement_over_parent": null + }, + "node_629": { + "node_id": "node_629", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 206.59 kg\n Factor of Safety: 0.75\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.58743363543593, + "fos_buckling": 0.7486479981340635, + "fos_yielding": 4.097880956645508, + "deflection": 0.0016707431252185833, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.195)" + }, + "parent_node_id": "node_628", + "improvement_over_parent": null + }, + "node_630": { + "node_id": "node_630", + "content": "MODIFICATION: Increase 7 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 222.40 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.39939142504042, + "fos_buckling": 1.562832187730821, + "fos_yielding": 4.153449765315935, + "deflection": 0.0014517323523369206, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.623)" + }, + "parent_node_id": "node_629", + "improvement_over_parent": null + }, + "node_631": { + "node_id": "node_631", + "content": "MODIFICATION: Increase 3 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4095220427861, + "fos_buckling": 1.5688661348302608, + "fos_yielding": 4.154147476393296, + "deflection": 0.0014494655559564849, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.266)" + }, + "parent_node_id": "node_630", + "improvement_over_parent": null + }, + "node_632": { + "node_id": "node_632", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_631", + "improvement_over_parent": null + }, + "node_633": { + "node_id": "node_633", + "content": "INITIAL DESIGN (Trace 90)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 122.42 kg\n Factor of Safety: 0.70\n Max Deflection: 2.76e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 122.42390293424448, + "fos_buckling": 0.6958245731108532, + "fos_yielding": 2.596390554301277, + "deflection": 0.0027593933192529537, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_634": { + "node_id": "node_634", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 138.37 kg\n Factor of Safety: 0.78\n Max Deflection: 2.44e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.3732224771159, + "fos_buckling": 0.7802907389747337, + "fos_yielding": 2.9327958792847375, + "deflection": 0.0024422030897734096, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.138)" + }, + "parent_node_id": "node_633", + "improvement_over_parent": null + }, + "node_635": { + "node_id": "node_635", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 177.10 kg\n Factor of Safety: 0.98\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.09718466630335, + "fos_buckling": 0.9794228841163927, + "fos_yielding": 3.747598356172842, + "deflection": 0.001909706462540423, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.302)" + }, + "parent_node_id": "node_634", + "improvement_over_parent": null + }, + "node_636": { + "node_id": "node_636", + "content": "MODIFICATION: Increase 5 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 178.75 kg\n Factor of Safety: 0.98\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.75353178299278, + "fos_buckling": 0.9790794140896086, + "fos_yielding": 3.747598356172842, + "deflection": 0.0019057140447302726, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.468)" + }, + "parent_node_id": "node_635", + "improvement_over_parent": null + }, + "node_637": { + "node_id": "node_637", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 200.18 kg\n Factor of Safety: 1.08\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.17794370528074, + "fos_buckling": 1.0846519565509911, + "fos_yielding": 4.1933129077480125, + "deflection": 0.0017024204622036333, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.131)" + }, + "parent_node_id": "node_636", + "improvement_over_parent": null + }, + "node_638": { + "node_id": "node_638", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 208.79 kg\n Factor of Safety: 0.81\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.7910483200414, + "fos_buckling": 0.8142451842408434, + "fos_yielding": 4.099949621441776, + "deflection": 0.0016417442976427998, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_637", + "improvement_over_parent": null + }, + "node_639": { + "node_id": "node_639", + "content": "MODIFICATION: Increase 7 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.10 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.09833014477132, + "fos_buckling": 1.567053441710902, + "fos_yielding": 4.148225135600426, + "deflection": 0.001451499889805177, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.536)" + }, + "parent_node_id": "node_638", + "improvement_over_parent": null + }, + "node_640": { + "node_id": "node_640", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_639", + "improvement_over_parent": null + }, + "node_641": { + "node_id": "node_641", + "content": "INITIAL DESIGN (Trace 91)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 154.89 kg\n Factor of Safety: 1.03\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.88800655578459, + "fos_buckling": 1.034801484799607, + "fos_yielding": 2.9028247019645845, + "deflection": 0.002073723689576156, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_642": { + "node_id": "node_642", + "content": "MODIFICATION: Increase 2 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 155.73 kg\n Factor of Safety: 1.16\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.73382410843436, + "fos_buckling": 1.1582321949616745, + "fos_yielding": 2.899267480782277, + "deflection": 0.002070497540466796, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.550)" + }, + "parent_node_id": "node_641", + "improvement_over_parent": null + }, + "node_643": { + "node_id": "node_643", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 201.35 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.35036548711702, + "fos_buckling": 1.4411109940339002, + "fos_yielding": 3.745447916947898, + "deflection": 0.0016060368993457096, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.318)" + }, + "parent_node_id": "node_642", + "improvement_over_parent": null + }, + "node_644": { + "node_id": "node_644", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33615139480045, + "fos_buckling": 1.568451509303275, + "fos_yielding": 4.1527888952216205, + "deflection": 0.0014499406483403027, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_643", + "improvement_over_parent": null + }, + "node_645": { + "node_id": "node_645", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_644", + "improvement_over_parent": null + }, + "node_646": { + "node_id": "node_646", + "content": "INITIAL DESIGN (Trace 92)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0022)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 117.18 kg\n Factor of Safety: 0.69\n Max Deflection: 2.76e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.17676998378818, + "fos_buckling": 0.685397957544482, + "fos_yielding": 2.6212860111988032, + "deflection": 2763725537603.537, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_647": { + "node_id": "node_647", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 148.33 kg\n Factor of Safety: 0.86\n Max Deflection: 2.02e+11 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.32558481860585, + "fos_buckling": 0.8552450186725681, + "fos_yielding": 3.313876491322163, + "deflection": 202384165031.05603, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.284)" + }, + "parent_node_id": "node_646", + "improvement_over_parent": null + }, + "node_648": { + "node_id": "node_648", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 153.18 kg\n Factor of Safety: 0.85\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.18175419902062, + "fos_buckling": 0.8509244715152225, + "fos_yielding": 3.313876491322163, + "deflection": 0.0022776079232412396, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001984)" + }, + "parent_node_id": "node_647", + "improvement_over_parent": null + }, + "node_649": { + "node_id": "node_649", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 157.27 kg\n Factor of Safety: 0.85\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.2668662206891, + "fos_buckling": 0.8505558859748278, + "fos_yielding": 3.313876491322163, + "deflection": 0.0021832462930535547, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001838)" + }, + "parent_node_id": "node_648", + "improvement_over_parent": null + }, + "node_650": { + "node_id": "node_650", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 199.61 kg\n Factor of Safety: 1.06\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.60643949660275, + "fos_buckling": 1.058002193585214, + "fos_yielding": 4.199134988326335, + "deflection": 0.0017211772791106428, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.294)" + }, + "parent_node_id": "node_649", + "improvement_over_parent": null + }, + "node_651": { + "node_id": "node_651", + "content": "MODIFICATION: Increase 7 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0091)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 220.97 kg\n Factor of Safety: 1.06\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.97257773339447, + "fos_buckling": 1.0556181948332273, + "fos_yielding": 4.199134988326335, + "deflection": 0.0015960319808221617, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.585)" + }, + "parent_node_id": "node_650", + "improvement_over_parent": null + }, + "node_652": { + "node_id": "node_652", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0091)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 229.59 kg\n Factor of Safety: 0.72\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 229.58568234815513, + "fos_buckling": 0.7244709303917494, + "fos_yielding": 4.09450314830118, + "deflection": 0.001523611507978898, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_651", + "improvement_over_parent": null + }, + "node_653": { + "node_id": "node_653", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_652", + "improvement_over_parent": null + }, + "node_654": { + "node_id": "node_654", + "content": "INITIAL DESIGN (Trace 93)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 197.74 kg\n Factor of Safety: 0.57\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 197.74286828928675, + "fos_buckling": 0.5715570674783498, + "fos_yielding": 4.065434950423132, + "deflection": 0.0018381015387402247, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_655": { + "node_id": "node_655", + "content": "MODIFICATION: Increase 7 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 205.76 kg\n Factor of Safety: 0.89\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.7642898321238, + "fos_buckling": 0.8910964029575132, + "fos_yielding": 4.110676017041422, + "deflection": 0.0016557601691586964, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.376)" + }, + "parent_node_id": "node_654", + "improvement_over_parent": null + }, + "node_656": { + "node_id": "node_656", + "content": "MODIFICATION: Increase 1 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 208.29 kg\n Factor of Safety: 0.87\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.2934352837263, + "fos_buckling": 0.8709977048103404, + "fos_yielding": 4.108788782728192, + "deflection": 0.001617399885002642, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.185)" + }, + "parent_node_id": "node_655", + "improvement_over_parent": null + }, + "node_657": { + "node_id": "node_657", + "content": "MODIFICATION: Increase 7 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.22 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.22453677031936, + "fos_buckling": 1.5597818934448326, + "fos_yielding": 4.150535713937605, + "deflection": 0.0014532632915343878, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.462)" + }, + "parent_node_id": "node_656", + "improvement_over_parent": null + }, + "node_658": { + "node_id": "node_658", + "content": "MODIFICATION: Increase 9 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.30 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.29620231764164, + "fos_buckling": 1.5680449387553292, + "fos_yielding": 4.1514097528344545, + "deflection": 0.001450155036870059, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.217)" + }, + "parent_node_id": "node_657", + "improvement_over_parent": null + }, + "node_659": { + "node_id": "node_659", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_658", + "improvement_over_parent": null + }, + "node_660": { + "node_id": "node_660", + "content": "INITIAL DESIGN (Trace 94)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 176.49 kg\n Factor of Safety: 0.06\n Max Deflection: 6.37e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.4927492069602, + "fos_buckling": 0.06040573273636347, + "fos_yielding": 1.4768709000920954, + "deflection": 0.0063681192154409, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_661": { + "node_id": "node_661", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 220.10 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.1038034497209, + "fos_buckling": 1.5510332010524253, + "fos_yielding": 4.1552584329451285, + "deflection": 0.0014602897978423558, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_660", + "improvement_over_parent": null + }, + "node_662": { + "node_id": "node_662", + "content": "MODIFICATION: Increase 3 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 221.57 kg\n Factor of Safety: 1.49\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.56789580023263, + "fos_buckling": 1.4924358104964837, + "fos_yielding": 4.1565314213384, + "deflection": 0.001457330079892986, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.433)" + }, + "parent_node_id": "node_661", + "improvement_over_parent": null + }, + "node_663": { + "node_id": "node_663", + "content": "MODIFICATION: Increase 5 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.259194013145, + "fos_buckling": 1.5680019061832693, + "fos_yielding": 4.151351269628284, + "deflection": 0.001450421839722039, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.416)" + }, + "parent_node_id": "node_662", + "improvement_over_parent": null + }, + "node_664": { + "node_id": "node_664", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_663", + "improvement_over_parent": null + }, + "node_665": { + "node_id": "node_665", + "content": "INITIAL DESIGN (Trace 95)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 142.82 kg\n Factor of Safety: 0.04\n Max Deflection: 8.05e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.82201593689018, + "fos_buckling": 0.03782712513429636, + "fos_yielding": 0.8599227134493926, + "deflection": 0.0080476947840304, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_666": { + "node_id": "node_666", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 159.48 kg\n Factor of Safety: 0.04\n Max Deflection: 7.21e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.47547249302136, + "fos_buckling": 0.04181917123289988, + "fos_yielding": 0.9619260462479625, + "deflection": 0.007208430647749276, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_665", + "improvement_over_parent": null + }, + "node_667": { + "node_id": "node_667", + "content": "MODIFICATION: Increase 4 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 171.69 kg\n Factor of Safety: 0.04\n Max Deflection: 6.85e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.689937509314, + "fos_buckling": 0.041819171232899896, + "fos_yielding": 0.9619260462479627, + "deflection": 0.006851759144964289, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.587)" + }, + "parent_node_id": "node_666", + "improvement_over_parent": null + }, + "node_668": { + "node_id": "node_668", + "content": "MODIFICATION: Increase 2 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 172.93 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.92920455078007, + "fos_buckling": 0.06040339302375132, + "fos_yielding": 1.476737219036179, + "deflection": 0.00610176670525646, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.587)" + }, + "parent_node_id": "node_667", + "improvement_over_parent": null + }, + "node_669": { + "node_id": "node_669", + "content": "MODIFICATION: Increase 0 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.61 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.60512674756006, + "fos_buckling": 0.060360679795379714, + "fos_yielding": 1.475692969517667, + "deflection": 0.006104525351462427, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.650)" + }, + "parent_node_id": "node_668", + "improvement_over_parent": null + }, + "node_670": { + "node_id": "node_670", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21618099032077, + "fos_buckling": 1.5676991011461592, + "fos_yielding": 4.15033058804381, + "deflection": 0.0014506700399673916, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_669", + "improvement_over_parent": null + }, + "node_671": { + "node_id": "node_671", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_670", + "improvement_over_parent": null + }, + "node_672": { + "node_id": "node_672", + "content": "INITIAL DESIGN (Trace 96)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 161.96 kg\n Factor of Safety: 1.16\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.9620517921206, + "fos_buckling": 1.1609409981820948, + "fos_yielding": 3.1383209887149666, + "deflection": 0.002032980771849953, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_673": { + "node_id": "node_673", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 190.66 kg\n Factor of Safety: 1.33\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.66476592343275, + "fos_buckling": 1.3338708954087783, + "fos_yielding": 3.692264876278657, + "deflection": 0.0017292428196122665, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_672", + "improvement_over_parent": null + }, + "node_674": { + "node_id": "node_674", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 196.07 kg\n Factor of Safety: 1.41\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.0652594000276, + "fos_buckling": 1.409631633852861, + "fos_yielding": 3.647538081995547, + "deflection": 0.0016487697972669953, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002225)" + }, + "parent_node_id": "node_673", + "improvement_over_parent": null + }, + "node_675": { + "node_id": "node_675", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.36711355772803, + "fos_buckling": 1.5686287024996872, + "fos_yielding": 4.153426674859809, + "deflection": 0.0014497337775813848, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.153)" + }, + "parent_node_id": "node_674", + "improvement_over_parent": null + }, + "node_676": { + "node_id": "node_676", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_675", + "improvement_over_parent": null + }, + "node_677": { + "node_id": "node_677", + "content": "INITIAL DESIGN (Trace 97)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 103.31 kg\n Factor of Safety: 0.04\n Max Deflection: 1.18e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.31466570369732, + "fos_buckling": 0.040813402961582555, + "fos_yielding": 0.7073105052471345, + "deflection": 0.011833884806998334, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_678": { + "node_id": "node_678", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 123.72 kg\n Factor of Safety: 0.05\n Max Deflection: 9.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.72240434150302, + "fos_buckling": 0.04777445869370472, + "fos_yielding": 0.849468169337391, + "deflection": 0.009872947922361736, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.211)" + }, + "parent_node_id": "node_677", + "improvement_over_parent": null + }, + "node_679": { + "node_id": "node_679", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 143.84 kg\n Factor of Safety: 0.05\n Max Deflection: 8.48e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.84439271732478, + "fos_buckling": 0.05428630882359152, + "fos_yielding": 0.9906146813742752, + "deflection": 0.008483527718015652, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_678", + "improvement_over_parent": null + }, + "node_680": { + "node_id": "node_680", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 163.90 kg\n Factor of Safety: 0.06\n Max Deflection: 7.44e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.90395692544874, + "fos_buckling": 0.060431921727928196, + "fos_yielding": 1.1323907563515487, + "deflection": 0.007437305831917011, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.153)" + }, + "parent_node_id": "node_679", + "improvement_over_parent": null + }, + "node_681": { + "node_id": "node_681", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 176.45 kg\n Factor of Safety: 0.06\n Max Deflection: 7.43e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.452314545545, + "fos_buckling": 0.060351571622422266, + "fos_yielding": 1.130885132930264, + "deflection": 0.007431585589685942, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_680", + "improvement_over_parent": null + }, + "node_682": { + "node_id": "node_682", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 220.06 kg\n Factor of Safety: 1.57\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.0633687883057, + "fos_buckling": 1.565265536624391, + "fos_yielding": 4.157036102968269, + "deflection": 0.0014550502097830495, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_681", + "improvement_over_parent": null + }, + "node_683": { + "node_id": "node_683", + "content": "MODIFICATION: Increase 8 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0091)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 242.02 kg\n Factor of Safety: 1.57\n Max Deflection: 1.32e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 242.01833381234712, + "fos_buckling": 1.5694050733790634, + "fos_yielding": 4.150985501326385, + "deflection": 0.0013225691941107156, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.603)" + }, + "parent_node_id": "node_682", + "improvement_over_parent": null + }, + "node_684": { + "node_id": "node_684", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_683", + "improvement_over_parent": null + }, + "node_685": { + "node_id": "node_685", + "content": "INITIAL DESIGN (Trace 98)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 140.12 kg\n Factor of Safety: 1.05\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.1245964702528, + "fos_buckling": 1.0477282499478806, + "fos_yielding": 2.7833360630331545, + "deflection": 0.0023416911508064822, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_686": { + "node_id": "node_686", + "content": "MODIFICATION: Increase 1 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 143.28 kg\n Factor of Safety: 1.08\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.2843326196191, + "fos_buckling": 1.0769042241566515, + "fos_yielding": 2.7833360630331536, + "deflection": 0.002218440049996302, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.395)" + }, + "parent_node_id": "node_685", + "improvement_over_parent": null + }, + "node_687": { + "node_id": "node_687", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 145.64 kg\n Factor of Safety: 1.10\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.64034250698455, + "fos_buckling": 1.0969446966958132, + "fos_yielding": 2.7543241396717337, + "deflection": 0.0021865404426527355, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001264)" + }, + "parent_node_id": "node_686", + "improvement_over_parent": null + }, + "node_688": { + "node_id": "node_688", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 170.80 kg\n Factor of Safety: 1.26\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.8018303320417, + "fos_buckling": 1.259367611382731, + "fos_yielding": 3.2282915672117656, + "deflection": 0.0018676094940743178, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.185)" + }, + "parent_node_id": "node_687", + "improvement_over_parent": null + }, + "node_689": { + "node_id": "node_689", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 219.72 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.7241205397341, + "fos_buckling": 1.5526765344862266, + "fos_yielding": 4.148191904824855, + "deflection": 0.001456599362881113, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.314)" + }, + "parent_node_id": "node_688", + "improvement_over_parent": null + }, + "node_690": { + "node_id": "node_690", + "content": "MODIFICATION: Increase 9 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0081)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 235.18 kg\n Factor of Safety: 1.51\n Max Deflection: 1.35e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 235.17784225787918, + "fos_buckling": 1.5138397706181757, + "fos_yielding": 4.143072885744901, + "deflection": 0.0013499775336663735, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.416)" + }, + "parent_node_id": "node_689", + "improvement_over_parent": null + }, + "node_691": { + "node_id": "node_691", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_690", + "improvement_over_parent": null + }, + "node_692": { + "node_id": "node_692", + "content": "INITIAL DESIGN (Trace 99)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_693": { + "node_id": "node_693", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 168.37 kg\n Factor of Safety: 1.19\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.3749775917042, + "fos_buckling": 1.1921331641674444, + "fos_yielding": 3.2945189887382114, + "deflection": 0.0019664119451102084, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002380)" + }, + "parent_node_id": "node_692", + "improvement_over_parent": null + }, + "node_694": { + "node_id": "node_694", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 214.39 kg\n Factor of Safety: 1.46\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.39313614839696, + "fos_buckling": 1.4562935324745387, + "fos_yielding": 4.192441536193467, + "deflection": 0.0015547193947062236, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.300)" + }, + "parent_node_id": "node_693", + "improvement_over_parent": null + }, + "node_695": { + "node_id": "node_695", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 219.57 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.56747902512564, + "fos_buckling": 1.5216462597468552, + "fos_yielding": 4.192441536193467, + "deflection": 0.0014715401459883964, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_694", + "improvement_over_parent": null + }, + "node_696": { + "node_id": "node_696", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.12188636082365, + "fos_buckling": 1.5672211089789774, + "fos_yielding": 4.148703853835761, + "deflection": 0.001451342051722263, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_695", + "improvement_over_parent": null + }, + "node_697": { + "node_id": "node_697", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_696", + "improvement_over_parent": null + }, + "node_698": { + "node_id": "node_698", + "content": "INITIAL DESIGN (Trace 100)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_699": { + "node_id": "node_699", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 192.64 kg\n Factor of Safety: 1.33\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.6449128055301, + "fos_buckling": 1.3347140791339998, + "fos_yielding": 3.7682583878764357, + "deflection": 0.001724753313751731, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002752)" + }, + "parent_node_id": "node_698", + "improvement_over_parent": null + }, + "node_700": { + "node_id": "node_700", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 197.29 kg\n Factor of Safety: 1.39\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 197.29079099774913, + "fos_buckling": 1.3946874022819469, + "fos_yielding": 3.768258387876435, + "deflection": 0.0016351886222813789, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002112)" + }, + "parent_node_id": "node_699", + "improvement_over_parent": null + }, + "node_701": { + "node_id": "node_701", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n\nPerformance:\n Mass: 200.48 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.48347688777199, + "fos_buckling": 1.435969506467108, + "fos_yielding": 3.7294059360742744, + "deflection": 0.0016128836028275466, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001751)" + }, + "parent_node_id": "node_700", + "improvement_over_parent": null + }, + "node_702": { + "node_id": "node_702", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28811326786132, + "fos_buckling": 1.568178341298741, + "fos_yielding": 4.1519276784834265, + "deflection": 0.0014502395963843348, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.125)" + }, + "parent_node_id": "node_701", + "improvement_over_parent": null + }, + "node_703": { + "node_id": "node_703", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_702", + "improvement_over_parent": null + }, + "node_704": { + "node_id": "node_704", + "content": "INITIAL DESIGN (Trace 101)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 149.68 kg\n Factor of Safety: 0.99\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.6794914316654, + "fos_buckling": 0.986857973560342, + "fos_yielding": 2.4120412919956453, + "deflection": 0.002111283463268303, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_705": { + "node_id": "node_705", + "content": "MODIFICATION: Increase 7 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 151.91 kg\n Factor of Safety: 0.99\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.90515526046548, + "fos_buckling": 0.9853122577312731, + "fos_yielding": 2.4082633112676235, + "deflection": 0.0021065335607239645, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.572)" + }, + "parent_node_id": "node_704", + "improvement_over_parent": null + }, + "node_706": { + "node_id": "node_706", + "content": "MODIFICATION: Increase 3 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 157.58 kg\n Factor of Safety: 0.92\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.58039036622452, + "fos_buckling": 0.9225384304582607, + "fos_yielding": 3.0602680137761578, + "deflection": 0.0020805906855166237, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.299)" + }, + "parent_node_id": "node_705", + "improvement_over_parent": null + }, + "node_707": { + "node_id": "node_707", + "content": "MODIFICATION: Increase 0 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 159.87 kg\n Factor of Safety: 1.12\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.86524587253513, + "fos_buckling": 1.1194197990520627, + "fos_yielding": 3.068355615345144, + "deflection": 0.0020160514972052744, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.222)" + }, + "parent_node_id": "node_706", + "improvement_over_parent": null + }, + "node_708": { + "node_id": "node_708", + "content": "MODIFICATION: Increase 4 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 161.44 kg\n Factor of Safety: 1.05\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.43685917822046, + "fos_buckling": 1.0500718088064687, + "fos_yielding": 3.065848318947114, + "deflection": 0.0020139255041080888, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.562)" + }, + "parent_node_id": "node_707", + "improvement_over_parent": null + }, + "node_709": { + "node_id": "node_709", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 195.94 kg\n Factor of Safety: 1.22\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.93622762478753, + "fos_buckling": 1.2220710608374745, + "fos_yielding": 3.7185819457547575, + "deflection": 0.0016632982135327188, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_708", + "improvement_over_parent": null + }, + "node_710": { + "node_id": "node_710", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.05 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.04597484979098, + "fos_buckling": 1.3234644263645612, + "fos_yielding": 4.136451531917258, + "deflection": 0.0014969289746661735, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.124)" + }, + "parent_node_id": "node_709", + "improvement_over_parent": null + }, + "node_711": { + "node_id": "node_711", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22031772651965, + "fos_buckling": 1.5678822496281306, + "fos_yielding": 4.150189036192575, + "deflection": 0.0014507342207272127, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_710", + "improvement_over_parent": null + }, + "node_712": { + "node_id": "node_712", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_711", + "improvement_over_parent": null + }, + "node_713": { + "node_id": "node_713", + "content": "INITIAL DESIGN (Trace 102)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 150.85 kg\n Factor of Safety: 0.05\n Max Deflection: 7.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.84653387875022, + "fos_buckling": 0.0538882789030377, + "fos_yielding": 1.2873674437802807, + "deflection": 0.007233451579941919, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_714": { + "node_id": "node_714", + "content": "MODIFICATION: Increase 4 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 151.81 kg\n Factor of Safety: 0.05\n Max Deflection: 7.02e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.81184178112335, + "fos_buckling": 0.05387723543071226, + "fos_yielding": 1.2871036200503814, + "deflection": 0.007016146928404087, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.238)" + }, + "parent_node_id": "node_713", + "improvement_over_parent": null + }, + "node_715": { + "node_id": "node_715", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 174.47 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.47425675440184, + "fos_buckling": 0.06040698798316035, + "fos_yielding": 1.4768971954856387, + "deflection": 0.006112403256506296, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.164)" + }, + "parent_node_id": "node_714", + "improvement_over_parent": null + }, + "node_716": { + "node_id": "node_716", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.09 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.08531099716254, + "fos_buckling": 1.3240502794369802, + "fos_yielding": 4.137539391340251, + "deflection": 0.0014966296027520115, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_715", + "improvement_over_parent": null + }, + "node_717": { + "node_id": "node_717", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2596538738912, + "fos_buckling": 1.567996389018999, + "fos_yielding": 4.151279043591878, + "deflection": 0.0014504288693090348, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_716", + "improvement_over_parent": null + }, + "node_718": { + "node_id": "node_718", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_717", + "improvement_over_parent": null + }, + "node_719": { + "node_id": "node_719", + "content": "INITIAL DESIGN (Trace 103)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 112.44 kg\n Factor of Safety: 0.98\n Max Deflection: 2.31e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.4387368357234, + "fos_buckling": 0.9805703726354114, + "fos_yielding": 2.3627422759435026, + "deflection": 23062543664229.92, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_720": { + "node_id": "node_720", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n\nPerformance:\n Mass: 115.95 kg\n Factor of Safety: 0.09\n Max Deflection: 7.11e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.9463399654579, + "fos_buckling": 0.09210657182560944, + "fos_yielding": 1.4623381699247286, + "deflection": 0.0071059544240976045, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001562)" + }, + "parent_node_id": "node_719", + "improvement_over_parent": null + }, + "node_721": { + "node_id": "node_721", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 147.38 kg\n Factor of Safety: 0.11\n Max Deflection: 5.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.37917436734497, + "fos_buckling": 0.11306916865465444, + "fos_yielding": 1.8529858286394223, + "deflection": 0.00560478095925628, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_720", + "improvement_over_parent": null + }, + "node_722": { + "node_id": "node_722", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 184.12 kg\n Factor of Safety: 1.07\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.12214079511892, + "fos_buckling": 1.0710825981579128, + "fos_yielding": 2.640263699109104, + "deflection": 0.001705314132470177, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004851)" + }, + "parent_node_id": "node_721", + "improvement_over_parent": null + }, + "node_723": { + "node_id": "node_723", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.73 kg\n Factor of Safety: 1.23\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.7285421814914, + "fos_buckling": 1.2251298184006165, + "fos_yielding": 3.0738842245881055, + "deflection": 0.0014723126979054972, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_722", + "improvement_over_parent": null + }, + "node_724": { + "node_id": "node_724", + "content": "MODIFICATION: Increase 4 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.87 kg\n Factor of Safety: 1.22\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.86973483228897, + "fos_buckling": 1.2242290217424323, + "fos_yielding": 3.0716241011337857, + "deflection": 0.001468616916486717, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.399)" + }, + "parent_node_id": "node_723", + "improvement_over_parent": null + }, + "node_725": { + "node_id": "node_725", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_724", + "improvement_over_parent": null + }, + "node_726": { + "node_id": "node_726", + "content": "INITIAL DESIGN (Trace 104)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_727": { + "node_id": "node_727", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 173.13 kg\n Factor of Safety: 1.26\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.12992478939614, + "fos_buckling": 1.2623913439547727, + "fos_yielding": 3.486117338677581, + "deflection": 0.001828121173596242, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001609)" + }, + "parent_node_id": "node_726", + "improvement_over_parent": null + }, + "node_728": { + "node_id": "node_728", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 180.28 kg\n Factor of Safety: 1.27\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.28198529122906, + "fos_buckling": 1.2724415385492387, + "fos_yielding": 3.4919401924688827, + "deflection": 0.0018279615004400678, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002095)" + }, + "parent_node_id": "node_727", + "improvement_over_parent": null + }, + "node_729": { + "node_id": "node_729", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 185.39 kg\n Factor of Safety: 1.35\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.39234622365476, + "fos_buckling": 1.345011270098781, + "fos_yielding": 3.4495328549183273, + "deflection": 0.0017425411859709598, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002096)" + }, + "parent_node_id": "node_728", + "improvement_over_parent": null + }, + "node_730": { + "node_id": "node_730", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20776578974872, + "fos_buckling": 1.567711085323169, + "fos_yielding": 4.150348293494612, + "deflection": 0.0014507757534159046, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.224)" + }, + "parent_node_id": "node_729", + "improvement_over_parent": null + }, + "node_731": { + "node_id": "node_731", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_730", + "improvement_over_parent": null + }, + "node_732": { + "node_id": "node_732", + "content": "INITIAL DESIGN (Trace 105)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_733": { + "node_id": "node_733", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n\nPerformance:\n Mass: 152.02 kg\n Factor of Safety: 1.15\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.01991255288885, + "fos_buckling": 1.1461803904653811, + "fos_yielding": 3.1174281905531953, + "deflection": 0.0021409377852384002, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001426)" + }, + "parent_node_id": "node_732", + "improvement_over_parent": null + }, + "node_734": { + "node_id": "node_734", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 156.59 kg\n Factor of Safety: 1.19\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.58756833590417, + "fos_buckling": 1.1887530549580678, + "fos_yielding": 3.1174281905531953, + "deflection": 0.002070463354912979, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001858)" + }, + "parent_node_id": "node_733", + "improvement_over_parent": null + }, + "node_735": { + "node_id": "node_735", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 175.49 kg\n Factor of Safety: 1.31\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.4893337704753, + "fos_buckling": 1.3096412816821192, + "fos_yielding": 3.492512523920635, + "deflection": 0.0018492741890929415, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.130)" + }, + "parent_node_id": "node_734", + "improvement_over_parent": null + }, + "node_736": { + "node_id": "node_736", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 182.65 kg\n Factor of Safety: 1.11\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.65405052944755, + "fos_buckling": 1.114673862053863, + "fos_yielding": 3.4429943497430875, + "deflection": 0.0018127234963614739, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002099)" + }, + "parent_node_id": "node_735", + "improvement_over_parent": null + }, + "node_737": { + "node_id": "node_737", + "content": "MODIFICATION: Increase 0 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 185.73 kg\n Factor of Safety: 1.35\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.73233151514341, + "fos_buckling": 1.3470931513117619, + "fos_yielding": 3.4558700098073207, + "deflection": 0.0017393441432871032, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.280)" + }, + "parent_node_id": "node_736", + "improvement_over_parent": null + }, + "node_738": { + "node_id": "node_738", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2770511796402, + "fos_buckling": 1.5681061760825594, + "fos_yielding": 4.151669505110718, + "deflection": 0.0014502953265642592, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.222)" + }, + "parent_node_id": "node_737", + "improvement_over_parent": null + }, + "node_739": { + "node_id": "node_739", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_738", + "improvement_over_parent": null + }, + "node_740": { + "node_id": "node_740", + "content": "INITIAL DESIGN (Trace 106)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 124.97 kg\n Factor of Safety: 0.09\n Max Deflection: 6.97e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.97126263461836, + "fos_buckling": 0.09377565277772554, + "fos_yielding": 1.4923554992884052, + "deflection": 0.006968957608007221, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_741": { + "node_id": "node_741", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 153.67 kg\n Factor of Safety: 0.11\n Max Deflection: 5.68e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.66995690193738, + "fos_buckling": 0.11195085819073403, + "fos_yielding": 1.8313105722579617, + "deflection": 0.005676279747691749, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_740", + "improvement_over_parent": null + }, + "node_742": { + "node_id": "node_742", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 189.99 kg\n Factor of Safety: 1.37\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.98566480279248, + "fos_buckling": 1.3736044665870817, + "fos_yielding": 3.5342393954397564, + "deflection": 0.0017007997767928848, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004790)" + }, + "parent_node_id": "node_741", + "improvement_over_parent": null + }, + "node_743": { + "node_id": "node_743", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1957568510884, + "fos_buckling": 1.5683108908296384, + "fos_yielding": 4.149584088938588, + "deflection": 0.0014507653120933947, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_742", + "improvement_over_parent": null + }, + "node_744": { + "node_id": "node_744", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_743", + "improvement_over_parent": null + }, + "node_745": { + "node_id": "node_745", + "content": "INITIAL DESIGN (Trace 107)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 145.76 kg\n Factor of Safety: 0.14\n Max Deflection: 3.20e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.75777674938294, + "fos_buckling": 0.13579085036444005, + "fos_yielding": 2.1625358968577, + "deflection": 3203589523561.726, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_746": { + "node_id": "node_746", + "content": "MODIFICATION: Increase 2 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 146.68 kg\n Factor of Safety: 0.26\n Max Deflection: 4.01e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.67615050968365, + "fos_buckling": 0.2633408329646176, + "fos_yielding": 3.942962889120365, + "deflection": 4013560176565.979, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.276)" + }, + "parent_node_id": "node_745", + "improvement_over_parent": null + }, + "node_747": { + "node_id": "node_747", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 167.94 kg\n Factor of Safety: 0.01\n Max Deflection: 1.33e+14 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.93874309494947, + "fos_buckling": 0.007828347191436437, + "fos_yielding": 0.15796040239694706, + "deflection": 132980082179804.73, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.159)" + }, + "parent_node_id": "node_746", + "improvement_over_parent": null + }, + "node_748": { + "node_id": "node_748", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 171.49 kg\n Factor of Safety: 0.06\n Max Deflection: 9.62e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.4931504306475, + "fos_buckling": 0.060416385275890314, + "fos_yielding": 1.4951388290203473, + "deflection": 0.00962278559056999, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_747", + "improvement_over_parent": null + }, + "node_749": { + "node_id": "node_749", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 177.65 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.64696516894531, + "fos_buckling": 0.1279301973516229, + "fos_yielding": 2.14901147988697, + "deflection": 0.004835517374144386, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_748", + "improvement_over_parent": null + }, + "node_750": { + "node_id": "node_750", + "content": "MODIFICATION: Increase 1 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 180.62 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.61974926754925, + "fos_buckling": 0.12788991819375747, + "fos_yielding": 2.148334857991242, + "deflection": 0.004836370102849731, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.224)" + }, + "parent_node_id": "node_749", + "improvement_over_parent": null + }, + "node_751": { + "node_id": "node_751", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27171761892265, + "fos_buckling": 1.568084617732875, + "fos_yielding": 4.151566999089617, + "deflection": 0.0014503429001977157, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_750", + "improvement_over_parent": null + }, + "node_752": { + "node_id": "node_752", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_751", + "improvement_over_parent": null + }, + "node_753": { + "node_id": "node_753", + "content": "INITIAL DESIGN (Trace 108)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 114.27 kg\n Factor of Safety: 0.04\n Max Deflection: 9.46e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.26735969825411, + "fos_buckling": 0.041496103012344535, + "fos_yielding": 0.9531313913024952, + "deflection": 0.009462837382754857, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_754": { + "node_id": "node_754", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 129.49 kg\n Factor of Safety: 0.05\n Max Deflection: 8.36e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.48880449552655, + "fos_buckling": 0.04628950259095365, + "fos_yielding": 1.0788718399250636, + "deflection": 0.008358047625293972, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.142)" + }, + "parent_node_id": "node_753", + "improvement_over_parent": null + }, + "node_755": { + "node_id": "node_755", + "content": "MODIFICATION: Increase 3 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 130.83 kg\n Factor of Safety: 0.05\n Max Deflection: 8.36e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.83238791298515, + "fos_buckling": 0.04628289196901883, + "fos_yielding": 1.07871776581645, + "deflection": 0.008357280485885748, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.590)" + }, + "parent_node_id": "node_754", + "improvement_over_parent": null + }, + "node_756": { + "node_id": "node_756", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 145.43 kg\n Factor of Safety: 0.05\n Max Deflection: 7.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.42725325772813, + "fos_buckling": 0.05067481902424388, + "fos_yielding": 1.197808492672992, + "deflection": 0.007524740834644836, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_755", + "improvement_over_parent": null + }, + "node_757": { + "node_id": "node_757", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 180.72 kg\n Factor of Safety: 1.32\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.72464706858588, + "fos_buckling": 1.3163489016068712, + "fos_yielding": 3.363023204358771, + "deflection": 0.00178703664587582, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004586)" + }, + "parent_node_id": "node_756", + "improvement_over_parent": null + }, + "node_758": { + "node_id": "node_758", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.19 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.191822208342, + "fos_buckling": 1.5676506512269877, + "fos_yielding": 4.150126544808109, + "deflection": 0.0014508904943266465, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.258)" + }, + "parent_node_id": "node_757", + "improvement_over_parent": null + }, + "node_759": { + "node_id": "node_759", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_758", + "improvement_over_parent": null + }, + "node_760": { + "node_id": "node_760", + "content": "INITIAL DESIGN (Trace 109)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 81.74 kg\n Factor of Safety: 0.03\n Max Deflection: 1.89e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 81.74485594741633, + "fos_buckling": 0.02804653854836685, + "fos_yielding": 0.6205010209853566, + "deflection": 0.018865530527693675, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_761": { + "node_id": "node_761", + "content": "MODIFICATION: Increase 4 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 86.75 kg\n Factor of Safety: 0.03\n Max Deflection: 1.86e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 86.74597586307648, + "fos_buckling": 0.02804653854836685, + "fos_yielding": 0.6205010209853566, + "deflection": 0.01856609016088452, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.304)" + }, + "parent_node_id": "node_760", + "improvement_over_parent": null + }, + "node_762": { + "node_id": "node_762", + "content": "MODIFICATION: Increase 2 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 87.54 kg\n Factor of Safety: 0.04\n Max Deflection: 1.74e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 87.53509464283684, + "fos_buckling": 0.0414097948419508, + "fos_yielding": 0.7943715815618346, + "deflection": 0.017408287226065067, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.562)" + }, + "parent_node_id": "node_761", + "improvement_over_parent": null + }, + "node_763": { + "node_id": "node_763", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n\nPerformance:\n Mass: 115.40 kg\n Factor of Safety: 0.09\n Max Deflection: 7.54e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.39987984749489, + "fos_buckling": 0.08744009447434178, + "fos_yielding": 1.379050990630456, + "deflection": 0.007542772664322087, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003564)" + }, + "parent_node_id": "node_762", + "improvement_over_parent": null + }, + "node_764": { + "node_id": "node_764", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 149.79 kg\n Factor of Safety: 0.11\n Max Deflection: 5.82e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.78864458474186, + "fos_buckling": 0.10956873040296901, + "fos_yielding": 1.7856142783980649, + "deflection": 0.005821926030635164, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.321)" + }, + "parent_node_id": "node_763", + "improvement_over_parent": null + }, + "node_765": { + "node_id": "node_765", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 185.14 kg\n Factor of Safety: 1.34\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.14154352857278, + "fos_buckling": 1.3430975672393148, + "fos_yielding": 3.4446889145388693, + "deflection": 0.001744898222466176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004653)" + }, + "parent_node_id": "node_764", + "improvement_over_parent": null + }, + "node_766": { + "node_id": "node_766", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.40824386318974, + "fos_buckling": 1.5684372185181326, + "fos_yielding": 4.153833586811111, + "deflection": 0.001449511560234114, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.227)" + }, + "parent_node_id": "node_765", + "improvement_over_parent": null + }, + "node_767": { + "node_id": "node_767", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_766", + "improvement_over_parent": null + }, + "node_768": { + "node_id": "node_768", + "content": "INITIAL DESIGN (Trace 110)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 139.94 kg\n Factor of Safety: 0.88\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.93597930938395, + "fos_buckling": 0.8807450624625501, + "fos_yielding": 2.6292420010165367, + "deflection": 0.0022898676286525247, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_769": { + "node_id": "node_769", + "content": "MODIFICATION: Increase 3 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 140.36 kg\n Factor of Safety: 1.00\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.3634002998457, + "fos_buckling": 0.9969241810749765, + "fos_yielding": 2.629700579551229, + "deflection": 0.002286060219163791, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.227)" + }, + "parent_node_id": "node_768", + "improvement_over_parent": null + }, + "node_770": { + "node_id": "node_770", + "content": "MODIFICATION: Increase 3 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 141.25 kg\n Factor of Safety: 1.06\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.25082824712834, + "fos_buckling": 1.0631232787611207, + "fos_yielding": 2.6303532712339126, + "deflection": 0.002280683743949325, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.393)" + }, + "parent_node_id": "node_769", + "improvement_over_parent": null + }, + "node_771": { + "node_id": "node_771", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 171.98 kg\n Factor of Safety: 1.26\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.98496433876053, + "fos_buckling": 1.261907271115642, + "fos_yielding": 3.200920423847361, + "deflection": 0.001876761940033657, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_770", + "improvement_over_parent": null + }, + "node_772": { + "node_id": "node_772", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.38 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.37724614107879, + "fos_buckling": 1.5686824513403563, + "fos_yielding": 4.153598360064831, + "deflection": 0.0014496652264233865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.328)" + }, + "parent_node_id": "node_771", + "improvement_over_parent": null + }, + "node_773": { + "node_id": "node_773", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_772", + "improvement_over_parent": null + }, + "node_774": { + "node_id": "node_774", + "content": "INITIAL DESIGN (Trace 111)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 139.03 kg\n Factor of Safety: 0.93\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.03202558999004, + "fos_buckling": 0.9292799536339892, + "fos_yielding": 2.641765944928877, + "deflection": 0.002334774590114369, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_775": { + "node_id": "node_775", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 177.17 kg\n Factor of Safety: 1.13\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.17238292806496, + "fos_buckling": 1.1308944507297638, + "fos_yielding": 3.364023778399599, + "deflection": 0.0018370205855223296, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_774", + "improvement_over_parent": null + }, + "node_776": { + "node_id": "node_776", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.00 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.99736651910723, + "fos_buckling": 1.323537297656158, + "fos_yielding": 4.135954968703768, + "deflection": 0.0014972235177346596, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.253)" + }, + "parent_node_id": "node_775", + "improvement_over_parent": null + }, + "node_777": { + "node_id": "node_777", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1717093958359, + "fos_buckling": 1.5675157932071453, + "fos_yielding": 4.149691530950809, + "deflection": 0.0014510068300842302, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_776", + "improvement_over_parent": null + }, + "node_778": { + "node_id": "node_778", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_777", + "improvement_over_parent": null + }, + "node_779": { + "node_id": "node_779", + "content": "INITIAL DESIGN (Trace 112)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 107.65 kg\n Factor of Safety: 0.16\n Max Deflection: 1.55e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.65203169120322, + "fos_buckling": 0.15670615361406148, + "fos_yielding": 1.412729266250502, + "deflection": 15538852777085.082, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_780": { + "node_id": "node_780", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 135.10 kg\n Factor of Safety: 0.94\n Max Deflection: 2.31e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.09779521875635, + "fos_buckling": 0.9437676264842869, + "fos_yielding": 2.6664728682814527, + "deflection": 0.0023125205190622756, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003551)" + }, + "parent_node_id": "node_779", + "improvement_over_parent": null + }, + "node_781": { + "node_id": "node_781", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 162.59 kg\n Factor of Safety: 1.10\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.59445599749495, + "fos_buckling": 1.0989787562066833, + "fos_yielding": 3.2073712157730947, + "deflection": 0.0019251872281129533, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_780", + "improvement_over_parent": null + }, + "node_782": { + "node_id": "node_782", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.87 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.86696401218535, + "fos_buckling": 1.3389626812218447, + "fos_yielding": 4.135840822965928, + "deflection": 0.001496530929540856, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_781", + "improvement_over_parent": null + }, + "node_783": { + "node_id": "node_783", + "content": "MODIFICATION: Increase 3 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.59 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.59151356970088, + "fos_buckling": 1.3386556093998878, + "fos_yielding": 4.135828177137658, + "deflection": 0.0014966402176221287, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.179)" + }, + "parent_node_id": "node_782", + "improvement_over_parent": null + }, + "node_784": { + "node_id": "node_784", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.14 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.13987118979713, + "fos_buckling": 1.5674564632127863, + "fos_yielding": 4.14892325240279, + "deflection": 0.0014512215436206924, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_783", + "improvement_over_parent": null + }, + "node_785": { + "node_id": "node_785", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_784", + "improvement_over_parent": null + }, + "node_786": { + "node_id": "node_786", + "content": "INITIAL DESIGN (Trace 113)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 144.70 kg\n Factor of Safety: 1.09\n Max Deflection: 2.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.6978695941759, + "fos_buckling": 1.0859892654958025, + "fos_yielding": 2.6943368010862323, + "deflection": 0.002226862305479681, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_787": { + "node_id": "node_787", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 171.46 kg\n Factor of Safety: 1.26\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.45627352089323, + "fos_buckling": 1.2585823630050386, + "fos_yielding": 3.191063241140719, + "deflection": 0.0018825063945815583, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.198)" + }, + "parent_node_id": "node_786", + "improvement_over_parent": null + }, + "node_788": { + "node_id": "node_788", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 192.69 kg\n Factor of Safety: 1.39\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.6920969749301, + "fos_buckling": 1.3893567416692756, + "fos_yielding": 3.584933953241282, + "deflection": 0.0016772887602280254, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_787", + "improvement_over_parent": null + }, + "node_789": { + "node_id": "node_789", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.39 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.38655864682775, + "fos_buckling": 1.5687331788690642, + "fos_yielding": 4.153710619553099, + "deflection": 0.0014496207905605584, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.175)" + }, + "parent_node_id": "node_788", + "improvement_over_parent": null + }, + "node_790": { + "node_id": "node_790", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_789", + "improvement_over_parent": null + }, + "node_791": { + "node_id": "node_791", + "content": "INITIAL DESIGN (Trace 114)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 124.82 kg\n Factor of Safety: 0.94\n Max Deflection: 2.13e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.82366036995072, + "fos_buckling": 0.9426467934216078, + "fos_yielding": 1.08126794842885, + "deflection": 21313799841375.453, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_792": { + "node_id": "node_792", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 152.33 kg\n Factor of Safety: 0.11\n Max Deflection: 1.90e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.3280847567117, + "fos_buckling": 0.11374773656523147, + "fos_yielding": 1.6223803705732112, + "deflection": 18966802207637.44, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_791", + "improvement_over_parent": null + }, + "node_793": { + "node_id": "node_793", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 171.04 kg\n Factor of Safety: 0.07\n Max Deflection: 1.18e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.04282522928608, + "fos_buckling": 0.07361894050957213, + "fos_yielding": 1.08126794842885, + "deflection": 11768587757422.248, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_792", + "improvement_over_parent": null + }, + "node_794": { + "node_id": "node_794", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.65 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.65387947204678, + "fos_buckling": 1.5232700667694936, + "fos_yielding": 4.196585955017723, + "deflection": 0.0014701000708152384, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_793", + "improvement_over_parent": null + }, + "node_795": { + "node_id": "node_795", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26698408680744, + "fos_buckling": 1.5680492274943298, + "fos_yielding": 4.151473269878522, + "deflection": 0.001450384146894948, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_794", + "improvement_over_parent": null + }, + "node_796": { + "node_id": "node_796", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_795", + "improvement_over_parent": null + }, + "node_797": { + "node_id": "node_797", + "content": "INITIAL DESIGN (Trace 115)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 90.35 kg\n Factor of Safety: 0.03\n Max Deflection: 1.16e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 90.35037668592743, + "fos_buckling": 0.03448065938456437, + "fos_yielding": 0.7761802083174184, + "deflection": 0.011622716855246993, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_798": { + "node_id": "node_798", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 110.73 kg\n Factor of Safety: 0.04\n Max Deflection: 9.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.72665844395675, + "fos_buckling": 0.041361333586793295, + "fos_yielding": 0.9496175553311412, + "deflection": 0.00949724259721394, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.238)" + }, + "parent_node_id": "node_797", + "improvement_over_parent": null + }, + "node_799": { + "node_id": "node_799", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 134.74 kg\n Factor of Safety: 0.05\n Max Deflection: 7.82e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.73949843718788, + "fos_buckling": 0.04905159563249624, + "fos_yielding": 1.1532365681434138, + "deflection": 0.007817754361637676, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_798", + "improvement_over_parent": null + }, + "node_800": { + "node_id": "node_800", + "content": "MODIFICATION: Increase 0 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 136.28 kg\n Factor of Safety: 0.05\n Max Deflection: 7.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.27671811982466, + "fos_buckling": 0.049043583079584376, + "fos_yielding": 1.153048187543293, + "deflection": 0.007818569950412527, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.183)" + }, + "parent_node_id": "node_799", + "improvement_over_parent": null + }, + "node_801": { + "node_id": "node_801", + "content": "MODIFICATION: Increase 0 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 139.87 kg\n Factor of Safety: 0.05\n Max Deflection: 7.82e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.87491317520528, + "fos_buckling": 0.049024838197798425, + "fos_yielding": 1.1526074825496564, + "deflection": 0.00782047901229226, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.372)" + }, + "parent_node_id": "node_800", + "improvement_over_parent": null + }, + "node_802": { + "node_id": "node_802", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 157.82 kg\n Factor of Safety: 0.05\n Max Deflection: 6.94e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.8157189223415, + "fos_buckling": 0.05428568874182322, + "fos_yielding": 1.2987860884731899, + "deflection": 0.00693844147286438, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.139)" + }, + "parent_node_id": "node_801", + "improvement_over_parent": null + }, + "node_803": { + "node_id": "node_803", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 196.10 kg\n Factor of Safety: 1.41\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.10258162767062, + "fos_buckling": 1.4100193608409948, + "fos_yielding": 3.6486638152093707, + "deflection": 0.0016486319447690675, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005007)" + }, + "parent_node_id": "node_802", + "improvement_over_parent": null + }, + "node_804": { + "node_id": "node_804", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23286492123086, + "fos_buckling": 1.5680433390314812, + "fos_yielding": 4.151427073084126, + "deflection": 0.0014507427063255806, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.152)" + }, + "parent_node_id": "node_803", + "improvement_over_parent": null + }, + "node_805": { + "node_id": "node_805", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_804", + "improvement_over_parent": null + }, + "node_806": { + "node_id": "node_806", + "content": "INITIAL DESIGN (Trace 116)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 180.93 kg\n Factor of Safety: 1.01\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.93450849478396, + "fos_buckling": 1.008596886186236, + "fos_yielding": 3.8117031266302672, + "deflection": 0.0019198068749926515, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_807": { + "node_id": "node_807", + "content": "MODIFICATION: Increase 8 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 183.48 kg\n Factor of Safety: 1.01\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.48132357058392, + "fos_buckling": 1.0110347342076353, + "fos_yielding": 3.8140625020868435, + "deflection": 0.0019191961228732762, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.316)" + }, + "parent_node_id": "node_806", + "improvement_over_parent": null + }, + "node_808": { + "node_id": "node_808", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 203.78 kg\n Factor of Safety: 1.11\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.78499912379584, + "fos_buckling": 1.1115746516747678, + "fos_yielding": 4.2317970574714625, + "deflection": 0.0017280839862604638, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.121)" + }, + "parent_node_id": "node_807", + "improvement_over_parent": null + }, + "node_809": { + "node_id": "node_809", + "content": "MODIFICATION: Increase 9 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.01 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.01176818827403, + "fos_buckling": 1.484551626080288, + "fos_yielding": 4.199670923230943, + "deflection": 0.001521030220383341, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.493)" + }, + "parent_node_id": "node_808", + "improvement_over_parent": null + }, + "node_810": { + "node_id": "node_810", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.16558292657186, + "fos_buckling": 1.5680086256450974, + "fos_yielding": 4.149095135357048, + "deflection": 0.0014509681062129134, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_809", + "improvement_over_parent": null + }, + "node_811": { + "node_id": "node_811", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_810", + "improvement_over_parent": null + }, + "node_812": { + "node_id": "node_812", + "content": "INITIAL DESIGN (Trace 117)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 124.06 kg\n Factor of Safety: 0.95\n Max Deflection: 2.59e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.05701230925125, + "fos_buckling": 0.9468799195853757, + "fos_yielding": 2.3108478873114118, + "deflection": 0.0025939815327288493, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_813": { + "node_id": "node_813", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 137.23 kg\n Factor of Safety: 1.04\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.23318523269145, + "fos_buckling": 1.036282841286851, + "fos_yielding": 2.5556822275722335, + "deflection": 0.0023468821396244867, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.112)" + }, + "parent_node_id": "node_812", + "improvement_over_parent": null + }, + "node_814": { + "node_id": "node_814", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 154.54 kg\n Factor of Safety: 1.15\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.53886061344332, + "fos_buckling": 1.1504789543759435, + "fos_yielding": 2.877074107722725, + "deflection": 0.002086354048363753, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_813", + "improvement_over_parent": null + }, + "node_815": { + "node_id": "node_815", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 176.99 kg\n Factor of Safety: 1.29\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.993255188955, + "fos_buckling": 1.2932077225136016, + "fos_yielding": 3.293789027292158, + "deflection": 0.0018242523823371252, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_814", + "improvement_over_parent": null + }, + "node_816": { + "node_id": "node_816", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.95 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.9485745858883, + "fos_buckling": 1.566253569482958, + "fos_yielding": 4.1455990406760215, + "deflection": 0.001452428546938721, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.285)" + }, + "parent_node_id": "node_815", + "improvement_over_parent": null + }, + "node_817": { + "node_id": "node_817", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_816", + "improvement_over_parent": null + }, + "node_818": { + "node_id": "node_818", + "content": "INITIAL DESIGN (Trace 118)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 161.30 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.29866688960854, + "fos_buckling": 0.06045505675718786, + "fos_yielding": 1.47807683217389, + "deflection": 0.00611041375193582, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_819": { + "node_id": "node_819", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 173.85 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.8470245097048, + "fos_buckling": 0.060374702674329844, + "fos_yielding": 1.476112240382668, + "deflection": 0.006100660951571278, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_818", + "improvement_over_parent": null + }, + "node_820": { + "node_id": "node_820", + "content": "MODIFICATION: Increase 6 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 179.66 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.6573446297328, + "fos_buckling": 0.060374702674329844, + "fos_yielding": 1.476112240382668, + "deflection": 0.006102958029155238, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.259)" + }, + "parent_node_id": "node_819", + "improvement_over_parent": null + }, + "node_821": { + "node_id": "node_821", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 214.25 kg\n Factor of Safety: 1.08\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.24562493388507, + "fos_buckling": 1.0784382301847155, + "fos_yielding": 4.124939254900779, + "deflection": 0.001553719939213945, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004487)" + }, + "parent_node_id": "node_820", + "improvement_over_parent": null + }, + "node_822": { + "node_id": "node_822", + "content": "MODIFICATION: Increase 7 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 216.43 kg\n Factor of Safety: 0.98\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.42824454680937, + "fos_buckling": 0.9824060966257735, + "fos_yielding": 4.117734740369887, + "deflection": 0.0015500270731875533, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.287)" + }, + "parent_node_id": "node_821", + "improvement_over_parent": null + }, + "node_823": { + "node_id": "node_823", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_822", + "improvement_over_parent": null + }, + "node_824": { + "node_id": "node_824", + "content": "INITIAL DESIGN (Trace 119)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 172.77 kg\n Factor of Safety: 1.30\n Max Deflection: 2.21e+11 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.77001179120055, + "fos_buckling": 1.302480665921672, + "fos_yielding": 3.62410224943789, + "deflection": 220895232513.9187, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_825": { + "node_id": "node_825", + "content": "MODIFICATION: Increase 2 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 174.00 kg\n Factor of Safety: 1.30\n Max Deflection: 2.21e+11 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.99651623013014, + "fos_buckling": 1.3023107134560312, + "fos_yielding": 3.62410224943789, + "deflection": 220895232513.9187, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.408)" + }, + "parent_node_id": "node_824", + "improvement_over_parent": null + }, + "node_826": { + "node_id": "node_826", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 177.07 kg\n Factor of Safety: 1.30\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.07475097003217, + "fos_buckling": 1.2966204898876883, + "fos_yielding": 3.623395270930935, + "deflection": 0.0017544087281602316, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001683)" + }, + "parent_node_id": "node_825", + "improvement_over_parent": null + }, + "node_827": { + "node_id": "node_827", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 204.64 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.63663608683316, + "fos_buckling": 1.4599953335158622, + "fos_yielding": 4.184118043353527, + "deflection": 0.0015201899605247733, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_826", + "improvement_over_parent": null + }, + "node_828": { + "node_id": "node_828", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.79 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.790450825131, + "fos_buckling": 1.3398708978122986, + "fos_yielding": 4.1398922188866925, + "deflection": 0.0014952429838810501, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_827", + "improvement_over_parent": null + }, + "node_829": { + "node_id": "node_829", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33880844522724, + "fos_buckling": 1.5684724103971566, + "fos_yielding": 4.152999446660994, + "deflection": 0.0014498834543392053, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_828", + "improvement_over_parent": null + }, + "node_830": { + "node_id": "node_830", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_829", + "improvement_over_parent": null + }, + "node_831": { + "node_id": "node_831", + "content": "INITIAL DESIGN (Trace 120)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 146.87 kg\n Factor of Safety: 0.05\n Max Deflection: 7.33e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.87496977653677, + "fos_buckling": 0.051851148700234426, + "fos_yielding": 1.2303306114958739, + "deflection": 0.007326110795773849, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_832": { + "node_id": "node_832", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 176.61 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.6131980829474, + "fos_buckling": 0.06037279019557208, + "fos_yielding": 1.4759516406225428, + "deflection": 0.006104317367160436, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.222)" + }, + "parent_node_id": "node_831", + "improvement_over_parent": null + }, + "node_833": { + "node_id": "node_833", + "content": "MODIFICATION: Increase 0 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.57 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.5714306861655, + "fos_buckling": 0.06035387266544422, + "fos_yielding": 1.4754891581111613, + "deflection": 0.006105539977572923, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.217)" + }, + "parent_node_id": "node_832", + "improvement_over_parent": null + }, + "node_834": { + "node_id": "node_834", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 213.99 kg\n Factor of Safety: 1.07\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.99463349949625, + "fos_buckling": 1.069421032937869, + "fos_yielding": 4.1226304627514105, + "deflection": 0.0015565502200962824, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004464)" + }, + "parent_node_id": "node_833", + "improvement_over_parent": null + }, + "node_835": { + "node_id": "node_835", + "content": "MODIFICATION: Increase 7 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 216.21 kg\n Factor of Safety: 0.97\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.21333691205834, + "fos_buckling": 0.97295971997292, + "fos_yielding": 4.115273136874007, + "deflection": 0.001552757115467799, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.292)" + }, + "parent_node_id": "node_834", + "improvement_over_parent": null + }, + "node_836": { + "node_id": "node_836", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_835", + "improvement_over_parent": null + }, + "node_837": { + "node_id": "node_837", + "content": "INITIAL DESIGN (Trace 121)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 121.52 kg\n Factor of Safety: 0.93\n Max Deflection: 2.65e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.52452507045876, + "fos_buckling": 0.9294526885293952, + "fos_yielding": 2.2637770076816213, + "deflection": 0.002647613641032049, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_838": { + "node_id": "node_838", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 141.09 kg\n Factor of Safety: 1.06\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.08522723939933, + "fos_buckling": 1.062018193921589, + "fos_yielding": 2.627237529134654, + "deflection": 0.0022833617456429474, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.170)" + }, + "parent_node_id": "node_837", + "improvement_over_parent": null + }, + "node_839": { + "node_id": "node_839", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 159.50 kg\n Factor of Safety: 1.18\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.49916101329336, + "fos_buckling": 1.1825368003158387, + "fos_yielding": 2.9691575304453965, + "deflection": 0.0020221038128650174, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.139)" + }, + "parent_node_id": "node_838", + "improvement_over_parent": null + }, + "node_840": { + "node_id": "node_840", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 181.00 kg\n Factor of Safety: 1.32\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.9981999704314, + "fos_buckling": 1.3180204414663477, + "fos_yielding": 3.36807877341711, + "deflection": 0.0017843380917955394, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.145)" + }, + "parent_node_id": "node_839", + "improvement_over_parent": null + }, + "node_841": { + "node_id": "node_841", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 200.82 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.824766179334, + "fos_buckling": 1.4379919174570321, + "fos_yielding": 3.7356952373153076, + "deflection": 0.0016101899547044866, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_840", + "improvement_over_parent": null + }, + "node_842": { + "node_id": "node_842", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.48 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.48299724448123, + "fos_buckling": 1.5692788474436095, + "fos_yielding": 4.155496670456928, + "deflection": 0.0014490040362183714, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.124)" + }, + "parent_node_id": "node_841", + "improvement_over_parent": null + }, + "node_843": { + "node_id": "node_843", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_842", + "improvement_over_parent": null + }, + "node_844": { + "node_id": "node_844", + "content": "INITIAL DESIGN (Trace 122)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 104.64 kg\n Factor of Safety: 0.79\n Max Deflection: 3.09e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 104.63999764849468, + "fos_buckling": 0.791146261126426, + "fos_yielding": 2.0585174119348544, + "deflection": 0.0030868509728801006, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_845": { + "node_id": "node_845", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n\nPerformance:\n Mass: 106.06 kg\n Factor of Safety: 0.80\n Max Deflection: 3.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.06453683130145, + "fos_buckling": 0.7978877462589321, + "fos_yielding": 2.0636016282146636, + "deflection": 0.0030870265250028243, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000747)" + }, + "parent_node_id": "node_844", + "improvement_over_parent": null + }, + "node_846": { + "node_id": "node_846", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n\nPerformance:\n Mass: 126.25 kg\n Factor of Safety: 0.93\n Max Deflection: 2.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.24853257464193, + "fos_buckling": 0.9342878240132996, + "fos_yielding": 2.455229820548245, + "deflection": 0.0025959769062759972, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_845", + "improvement_over_parent": null + }, + "node_847": { + "node_id": "node_847", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 155.65 kg\n Factor of Safety: 1.12\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.64745507551214, + "fos_buckling": 1.1241886796247778, + "fos_yielding": 3.025037656037329, + "deflection": 0.002108588728077394, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_846", + "improvement_over_parent": null + }, + "node_848": { + "node_id": "node_848", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n\nPerformance:\n Mass: 193.11 kg\n Factor of Safety: 1.35\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.10687535704855, + "fos_buckling": 1.3511404070294417, + "fos_yielding": 3.7500104451049374, + "deflection": 0.001702586826418713, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.261)" + }, + "parent_node_id": "node_847", + "improvement_over_parent": null + }, + "node_849": { + "node_id": "node_849", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 216.14 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.1385924958305, + "fos_buckling": 1.4823595962269578, + "fos_yielding": 4.195162222981363, + "deflection": 0.0015228253477024359, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.131)" + }, + "parent_node_id": "node_848", + "improvement_over_parent": null + }, + "node_850": { + "node_id": "node_850", + "content": "MODIFICATION: Increase 2 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0029)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 217.20 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.20310746458162, + "fos_buckling": 1.4827121736963973, + "fos_yielding": 4.195599481680684, + "deflection": 0.0015229916689851167, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.232)" + }, + "parent_node_id": "node_849", + "improvement_over_parent": null + }, + "node_851": { + "node_id": "node_851", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0029)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.35692220287945, + "fos_buckling": 1.5701873619425433, + "fos_yielding": 4.147569488543373, + "deflection": 0.0014519448132682224, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_850", + "improvement_over_parent": null + }, + "node_852": { + "node_id": "node_852", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_851", + "improvement_over_parent": null + }, + "node_853": { + "node_id": "node_853", + "content": "INITIAL DESIGN (Trace 123)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 208.30 kg\n Factor of Safety: 1.46\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.29902575365955, + "fos_buckling": 1.4593178288474629, + "fos_yielding": 4.181777193833649, + "deflection": 0.0016606248511132884, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_854": { + "node_id": "node_854", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 214.45 kg\n Factor of Safety: 1.01\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.45284049195737, + "fos_buckling": 1.0128258135774753, + "fos_yielding": 4.120533710748442, + "deflection": 0.0015721410943593502, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_853", + "improvement_over_parent": null + }, + "node_855": { + "node_id": "node_855", + "content": "MODIFICATION: Increase 0 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 220.48 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.47909427030785, + "fos_buckling": 1.5565100156652507, + "fos_yielding": 4.150096677613414, + "deflection": 0.0014548612279375271, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.555)" + }, + "parent_node_id": "node_854", + "improvement_over_parent": null + }, + "node_856": { + "node_id": "node_856", + "content": "MODIFICATION: Increase 9 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 232.20 kg\n Factor of Safety: 1.55\n Max Deflection: 1.37e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 232.19880397614492, + "fos_buckling": 1.5532555448971177, + "fos_yielding": 4.145855930234943, + "deflection": 0.0013694374646336582, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.312)" + }, + "parent_node_id": "node_855", + "improvement_over_parent": null + }, + "node_857": { + "node_id": "node_857", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_856", + "improvement_over_parent": null + }, + "node_858": { + "node_id": "node_858", + "content": "INITIAL DESIGN (Trace 124)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n\nPerformance:\n Mass: 79.96 kg\n Factor of Safety: 0.07\n Max Deflection: 2.70e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 79.96123072246044, + "fos_buckling": 0.06751197694042936, + "fos_yielding": 1.0812679484288499, + "deflection": 26984724174521.344, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_859": { + "node_id": "node_859", + "content": "MODIFICATION: Increase 0 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n\nPerformance:\n Mass: 81.97 kg\n Factor of Safety: 0.06\n Max Deflection: 1.83e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 81.96655244389912, + "fos_buckling": 0.06360447278103668, + "fos_yielding": 1.0812679484288499, + "deflection": 18289076377874.62, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.305)" + }, + "parent_node_id": "node_858", + "improvement_over_parent": null + }, + "node_860": { + "node_id": "node_860", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n\nPerformance:\n Mass: 103.51 kg\n Factor of Safety: 0.65\n Max Deflection: 3.18e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.50582068751154, + "fos_buckling": 0.6481255834080437, + "fos_yielding": 2.075089154927868, + "deflection": 0.0031794840077267526, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.002720)" + }, + "parent_node_id": "node_859", + "improvement_over_parent": null + }, + "node_861": { + "node_id": "node_861", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n\nPerformance:\n Mass: 105.26 kg\n Factor of Safety: 0.68\n Max Deflection: 3.15e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 105.2615325158916, + "fos_buckling": 0.6817452688561689, + "fos_yielding": 2.057749684718333, + "deflection": 0.0031476376663701153, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000928)" + }, + "parent_node_id": "node_860", + "improvement_over_parent": null + }, + "node_862": { + "node_id": "node_862", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 134.44 kg\n Factor of Safety: 0.85\n Max Deflection: 2.47e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.43719665864077, + "fos_buckling": 0.8484280308684515, + "fos_yielding": 2.625413151331175, + "deflection": 0.00246785998499179, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_861", + "improvement_over_parent": null + }, + "node_863": { + "node_id": "node_863", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 166.14 kg\n Factor of Safety: 1.02\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.1366327843137, + "fos_buckling": 1.0189764672148638, + "fos_yielding": 3.2407754395538526, + "deflection": 0.001999863981009291, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.252)" + }, + "parent_node_id": "node_862", + "improvement_over_parent": null + }, + "node_864": { + "node_id": "node_864", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 213.54 kg\n Factor of Safety: 1.25\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.54030953225535, + "fos_buckling": 1.2540296794098764, + "fos_yielding": 4.1581325112129255, + "deflection": 0.001559193678216602, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.312)" + }, + "parent_node_id": "node_863", + "improvement_over_parent": null + }, + "node_865": { + "node_id": "node_865", + "content": "MODIFICATION: Increase 10 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n\nPerformance:\n Mass: 214.56 kg\n Factor of Safety: 1.26\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.55957515096296, + "fos_buckling": 1.2580378165414439, + "fos_yielding": 4.1556266750499145, + "deflection": 0.0015583039307198805, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.326)" + }, + "parent_node_id": "node_864", + "improvement_over_parent": null + }, + "node_866": { + "node_id": "node_866", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_865", + "improvement_over_parent": null + }, + "node_867": { + "node_id": "node_867", + "content": "INITIAL DESIGN (Trace 125)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 164.75 kg\n Factor of Safety: 1.11\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.75446047264035, + "fos_buckling": 1.1116344596219931, + "fos_yielding": 3.317807599018838, + "deflection": 0.001963038986071317, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_868": { + "node_id": "node_868", + "content": "MODIFICATION: Increase 9 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 170.49 kg\n Factor of Safety: 1.25\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.4889843035091, + "fos_buckling": 1.2536926385687708, + "fos_yielding": 3.317807599018837, + "deflection": 0.0018655528572690367, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.220)" + }, + "parent_node_id": "node_867", + "improvement_over_parent": null + }, + "node_869": { + "node_id": "node_869", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 173.30 kg\n Factor of Safety: 1.28\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.29831287198573, + "fos_buckling": 1.2752469207674673, + "fos_yielding": 3.282510564048613, + "deflection": 0.0018382374060677109, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001525)" + }, + "parent_node_id": "node_868", + "improvement_over_parent": null + }, + "node_870": { + "node_id": "node_870", + "content": "MODIFICATION: Increase 9 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0066)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 188.47 kg\n Factor of Safety: 1.24\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.46569589104658, + "fos_buckling": 1.2393444246760386, + "fos_yielding": 3.2779344145608493, + "deflection": 0.0016793048641350666, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.502)" + }, + "parent_node_id": "node_869", + "improvement_over_parent": null + }, + "node_871": { + "node_id": "node_871", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0086)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 237.62 kg\n Factor of Safety: 1.49\n Max Deflection: 1.34e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 237.6159748404083, + "fos_buckling": 1.486664879138147, + "fos_yielding": 4.1405940524883516, + "deflection": 0.0013360046765417191, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.290)" + }, + "parent_node_id": "node_870", + "improvement_over_parent": null + }, + "node_872": { + "node_id": "node_872", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_871", + "improvement_over_parent": null + }, + "node_873": { + "node_id": "node_873", + "content": "INITIAL DESIGN (Trace 126)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0018)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 105.24 kg\n Factor of Safety: 0.04\n Max Deflection: 9.21e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 105.24056363340395, + "fos_buckling": 0.042561090698519245, + "fos_yielding": 0.9806793922260513, + "deflection": 0.009213814649363604, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_874": { + "node_id": "node_874", + "content": "MODIFICATION: Increase 5 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 108.75 kg\n Factor of Safety: 0.04\n Max Deflection: 9.21e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.74679697690614, + "fos_buckling": 0.042561090698519266, + "fos_yielding": 0.9806793922260519, + "deflection": 0.009213814649363602, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.364)" + }, + "parent_node_id": "node_873", + "improvement_over_parent": null + }, + "node_875": { + "node_id": "node_875", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n\nPerformance:\n Mass: 111.15 kg\n Factor of Safety: 0.04\n Max Deflection: 9.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.14725832289518, + "fos_buckling": 0.042550220882700426, + "fos_yielding": 0.9804289333163793, + "deflection": 0.009191861956783037, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001049)" + }, + "parent_node_id": "node_874", + "improvement_over_parent": null + }, + "node_876": { + "node_id": "node_876", + "content": "MODIFICATION: Increase 3 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0057)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n\nPerformance:\n Mass: 120.74 kg\n Factor of Safety: 0.04\n Max Deflection: 8.90e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.74177765817967, + "fos_buckling": 0.04255022088270045, + "fos_yielding": 0.9804289333163798, + "deflection": 0.008897193646638216, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.451)" + }, + "parent_node_id": "node_875", + "improvement_over_parent": null + }, + "node_877": { + "node_id": "node_877", + "content": "MODIFICATION: Increase 6 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0057)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0025)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n\nPerformance:\n Mass: 123.45 kg\n Factor of Safety: 0.04\n Max Deflection: 7.73e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.4495236734034, + "fos_buckling": 0.042537966276287496, + "fos_yielding": 0.9801465664932607, + "deflection": 0.007729607156187478, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.520)" + }, + "parent_node_id": "node_876", + "improvement_over_parent": null + }, + "node_878": { + "node_id": "node_878", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0070)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0031)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n\nPerformance:\n Mass: 148.96 kg\n Factor of Safety: 0.05\n Max Deflection: 6.42e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.95921638098702, + "fos_buckling": 0.050114239606203675, + "fos_yielding": 1.1824280907132538, + "deflection": 0.006423303428802487, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.224)" + }, + "parent_node_id": "node_877", + "improvement_over_parent": null + }, + "node_879": { + "node_id": "node_879", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0070)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0031)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 183.79 kg\n Factor of Safety: 0.62\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.79129363419054, + "fos_buckling": 0.6166603494981098, + "fos_yielding": 2.647963087397487, + "deflection": 0.0018217957251193562, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004521)" + }, + "parent_node_id": "node_878", + "improvement_over_parent": null + }, + "node_880": { + "node_id": "node_880", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0089)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0039)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 229.70 kg\n Factor of Safety: 0.75\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 229.69886430297822, + "fos_buckling": 0.7492964800373132, + "fos_yielding": 3.3345229298086956, + "deflection": 0.001458968928470715, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.277)" + }, + "parent_node_id": "node_879", + "improvement_over_parent": null + }, + "node_881": { + "node_id": "node_881", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_880", + "improvement_over_parent": null + }, + "node_882": { + "node_id": "node_882", + "content": "INITIAL DESIGN (Trace 127)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 138.12 kg\n Factor of Safety: 0.23\n Max Deflection: 8.92e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.12303794224744, + "fos_buckling": 0.22660179513975098, + "fos_yielding": 3.721265853831585, + "deflection": 8920373498760.484, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_883": { + "node_id": "node_883", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 145.76 kg\n Factor of Safety: 0.04\n Max Deflection: 1.22e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.7564871534464, + "fos_buckling": 0.03996017140573384, + "fos_yielding": 0.9138713238048888, + "deflection": 0.012155914843492785, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002248)" + }, + "parent_node_id": "node_882", + "improvement_over_parent": null + }, + "node_884": { + "node_id": "node_884", + "content": "MODIFICATION: Increase 0 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 151.69 kg\n Factor of Safety: 0.04\n Max Deflection: 1.22e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.69288231977495, + "fos_buckling": 0.03993497332461576, + "fos_yielding": 0.9132950549116723, + "deflection": 0.012156953025357551, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.645)" + }, + "parent_node_id": "node_883", + "improvement_over_parent": null + }, + "node_885": { + "node_id": "node_885", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 171.04 kg\n Factor of Safety: 0.04\n Max Deflection: 1.08e-02 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.04336439532239, + "fos_buckling": 0.044517504973129465, + "fos_yielding": 1.0322402751699111, + "deflection": 0.010778750679221903, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_884", + "improvement_over_parent": null + }, + "node_886": { + "node_id": "node_886", + "content": "MODIFICATION: Increase 2 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 172.11 kg\n Factor of Safety: 0.06\n Max Deflection: 1.02e-02 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.11378484874515, + "fos_buckling": 0.06042792011365887, + "fos_yielding": 1.477229519698896, + "deflection": 0.01017538863659607, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.473)" + }, + "parent_node_id": "node_885", + "improvement_over_parent": null + }, + "node_887": { + "node_id": "node_887", + "content": "MODIFICATION: Increase 3 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 173.39 kg\n Factor of Safety: 0.06\n Max Deflection: 9.86e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.39374850641295, + "fos_buckling": 0.06041971672712346, + "fos_yielding": 1.4770289785462494, + "deflection": 0.009863590614718032, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.361)" + }, + "parent_node_id": "node_886", + "improvement_over_parent": null + }, + "node_888": { + "node_id": "node_888", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 179.55 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.54756324471077, + "fos_buckling": 0.060340949701723115, + "fos_yielding": 1.4751034286533953, + "deflection": 0.006106521607302848, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_887", + "improvement_over_parent": null + }, + "node_889": { + "node_id": "node_889", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.15861748747147, + "fos_buckling": 1.56730432104048, + "fos_yielding": 4.148996752146212, + "deflection": 0.0014510018673249768, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_888", + "improvement_over_parent": null + }, + "node_890": { + "node_id": "node_890", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_889", + "improvement_over_parent": null + }, + "node_891": { + "node_id": "node_891", + "content": "INITIAL DESIGN (Trace 128)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 140.78 kg\n Factor of Safety: 0.83\n Max Deflection: 2.17e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.78180893104656, + "fos_buckling": 0.825878619477779, + "fos_yielding": 1.9833157146370801, + "deflection": 0.002171539995795956, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_892": { + "node_id": "node_892", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 168.23 kg\n Factor of Safety: 0.97\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.2337894815421, + "fos_buckling": 0.9747712791389748, + "fos_yielding": 2.377685619352351, + "deflection": 0.001811362008320589, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_891", + "improvement_over_parent": null + }, + "node_893": { + "node_id": "node_893", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 171.12 kg\n Factor of Safety: 0.98\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.11842129766987, + "fos_buckling": 0.9764654543773671, + "fos_yielding": 2.3818180924639374, + "deflection": 0.0018120734695936816, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001569)" + }, + "parent_node_id": "node_892", + "improvement_over_parent": null + }, + "node_894": { + "node_id": "node_894", + "content": "MODIFICATION: Increase 8 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0032)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 173.76 kg\n Factor of Safety: 0.98\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.75556506413255, + "fos_buckling": 0.9767134499825929, + "fos_yielding": 2.382423009326823, + "deflection": 0.0018077601592011155, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.285)" + }, + "parent_node_id": "node_893", + "improvement_over_parent": null + }, + "node_895": { + "node_id": "node_895", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0040)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.35 kg\n Factor of Safety: 1.18\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.35254980710866, + "fos_buckling": 1.183251548879853, + "fos_yielding": 2.9535369391745907, + "deflection": 0.0014688147269960221, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.256)" + }, + "parent_node_id": "node_894", + "improvement_over_parent": null + }, + "node_896": { + "node_id": "node_896", + "content": "MODIFICATION: Increase 4 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0038)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0040)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 216.84 kg\n Factor of Safety: 1.18\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.83928096286857, + "fos_buckling": 1.1823689098202697, + "fos_yielding": 2.9513337668492254, + "deflection": 0.0014645401458091083, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.466)" + }, + "parent_node_id": "node_895", + "improvement_over_parent": null + }, + "node_897": { + "node_id": "node_897", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_896", + "improvement_over_parent": null + }, + "node_898": { + "node_id": "node_898", + "content": "INITIAL DESIGN (Trace 129)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 169.66 kg\n Factor of Safety: 1.23\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.66255997031791, + "fos_buckling": 1.2269091396778329, + "fos_yielding": 3.350469972795159, + "deflection": 0.001904064874126384, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_899": { + "node_id": "node_899", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 190.94 kg\n Factor of Safety: 1.36\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.94042342619704, + "fos_buckling": 1.3553514485779043, + "fos_yielding": 3.768431505866503, + "deflection": 0.0016938291175089566, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.136)" + }, + "parent_node_id": "node_898", + "improvement_over_parent": null + }, + "node_900": { + "node_id": "node_900", + "content": "MODIFICATION: Increase 2 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 191.89 kg\n Factor of Safety: 1.36\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.88997523969576, + "fos_buckling": 1.3557337586534588, + "fos_yielding": 3.768632242561415, + "deflection": 0.001693993007827895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.460)" + }, + "parent_node_id": "node_899", + "improvement_over_parent": null + }, + "node_901": { + "node_id": "node_901", + "content": "MODIFICATION: Increase 8 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 194.68 kg\n Factor of Safety: 1.36\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.67720977583053, + "fos_buckling": 1.3572308512276545, + "fos_yielding": 3.7695285071475753, + "deflection": 0.001693972484697239, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.357)" + }, + "parent_node_id": "node_900", + "improvement_over_parent": null + }, + "node_902": { + "node_id": "node_902", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 200.20 kg\n Factor of Safety: 1.43\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.19831440439916, + "fos_buckling": 1.4342502719089303, + "fos_yielding": 3.723885668450031, + "deflection": 0.0016152195018629655, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002279)" + }, + "parent_node_id": "node_901", + "improvement_over_parent": null + }, + "node_903": { + "node_id": "node_903", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.15 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.15447716268469, + "fos_buckling": 1.567395484497083, + "fos_yielding": 4.149194283964958, + "deflection": 0.001451155969199175, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_902", + "improvement_over_parent": null + }, + "node_904": { + "node_id": "node_904", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_903", + "improvement_over_parent": null + }, + "node_905": { + "node_id": "node_905", + "content": "INITIAL DESIGN (Trace 130)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 139.56 kg\n Factor of Safety: 1.05\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.56443167410856, + "fos_buckling": 1.0549362359944114, + "fos_yielding": 2.7964538517645976, + "deflection": 0.002453277448321634, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_906": { + "node_id": "node_906", + "content": "MODIFICATION: Increase 1 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 142.85 kg\n Factor of Safety: 1.05\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.85192760331756, + "fos_buckling": 1.0454635516505957, + "fos_yielding": 2.785710721626044, + "deflection": 0.00228913865959074, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.418)" + }, + "parent_node_id": "node_905", + "improvement_over_parent": null + }, + "node_907": { + "node_id": "node_907", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 184.01 kg\n Factor of Safety: 1.30\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.01042216926803, + "fos_buckling": 1.300653342746431, + "fos_yielding": 3.584983982761436, + "deflection": 0.0017807214571764637, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_906", + "improvement_over_parent": null + }, + "node_908": { + "node_id": "node_908", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.86 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.8572064699299, + "fos_buckling": 1.4841140110044808, + "fos_yielding": 4.202381195934292, + "deflection": 0.001520386570707157, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.190)" + }, + "parent_node_id": "node_907", + "improvement_over_parent": null + }, + "node_909": { + "node_id": "node_909", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 222.01 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.01102120822773, + "fos_buckling": 1.569024665626424, + "fos_yielding": 4.155051912033378, + "deflection": 0.001451669191115671, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_908", + "improvement_over_parent": null + }, + "node_910": { + "node_id": "node_910", + "content": "MODIFICATION: Increase 8 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0037)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 224.13 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 224.12649581866222, + "fos_buckling": 1.5708859811846427, + "fos_yielding": 4.155716374336529, + "deflection": 0.0014490753605106035, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.189)" + }, + "parent_node_id": "node_909", + "improvement_over_parent": null + }, + "node_911": { + "node_id": "node_911", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_910", + "improvement_over_parent": null + }, + "node_912": { + "node_id": "node_912", + "content": "INITIAL DESIGN (Trace 131)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_913": { + "node_id": "node_913", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 123.39 kg\n Factor of Safety: 0.27\n Max Deflection: 3.78e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.39175237611131, + "fos_buckling": 0.26617692640954693, + "fos_yielding": 2.93475418359483, + "deflection": 3778912338184.409, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002470)" + }, + "parent_node_id": "node_912", + "improvement_over_parent": null + }, + "node_914": { + "node_id": "node_914", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 152.02 kg\n Factor of Safety: 0.06\n Max Deflection: 1.34e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.02415537384127, + "fos_buckling": 0.06437102674975224, + "fos_yielding": 1.08126794842885, + "deflection": 13411550248355.57, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.253)" + }, + "parent_node_id": "node_913", + "improvement_over_parent": null + }, + "node_915": { + "node_id": "node_915", + "content": "MODIFICATION: Increase 5 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 160.01 kg\n Factor of Safety: 0.06\n Max Deflection: 1.34e+13 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.01497443308298, + "fos_buckling": 0.06437102674975224, + "fos_yielding": 1.08126794842885, + "deflection": 13411550248355.57, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.391)" + }, + "parent_node_id": "node_914", + "improvement_over_parent": null + }, + "node_916": { + "node_id": "node_916", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 202.67 kg\n Factor of Safety: 1.47\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.66694278445638, + "fos_buckling": 1.4730473002380036, + "fos_yielding": 4.195470059896711, + "deflection": 0.0016531189220907333, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_915", + "improvement_over_parent": null + }, + "node_917": { + "node_id": "node_917", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 211.28 kg\n Factor of Safety: 1.46\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.28004739921704, + "fos_buckling": 1.4609324820326826, + "fos_yielding": 4.1817117327492275, + "deflection": 0.0016521703073672494, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_916", + "improvement_over_parent": null + }, + "node_918": { + "node_id": "node_918", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.43 kg\n Factor of Safety: 1.05\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.43386213751486, + "fos_buckling": 1.0544367070624665, + "fos_yielding": 4.122435017136649, + "deflection": 0.0015612855641943702, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_917", + "improvement_over_parent": null + }, + "node_919": { + "node_id": "node_919", + "content": "MODIFICATION: Increase 0 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20062039778242, + "fos_buckling": 1.5679603541084914, + "fos_yielding": 4.150320577602598, + "deflection": 0.0014507778686449848, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.520)" + }, + "parent_node_id": "node_918", + "improvement_over_parent": null + }, + "node_920": { + "node_id": "node_920", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_919", + "improvement_over_parent": null + }, + "node_921": { + "node_id": "node_921", + "content": "INITIAL DESIGN (Trace 132)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 138.45 kg\n Factor of Safety: 0.05\n Max Deflection: 8.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.45069448836185, + "fos_buckling": 0.04998391322904078, + "fos_yielding": 1.1786921713967526, + "deflection": 0.008108559084048584, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_922": { + "node_id": "node_922", + "content": "MODIFICATION: Increase 5 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 139.79 kg\n Factor of Safety: 0.05\n Max Deflection: 7.77e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.78758141167842, + "fos_buckling": 0.04996971539363557, + "fos_yielding": 1.1783573661291817, + "deflection": 0.007769516837537486, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.403)" + }, + "parent_node_id": "node_921", + "improvement_over_parent": null + }, + "node_923": { + "node_id": "node_923", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 175.76 kg\n Factor of Safety: 0.06\n Max Deflection: 6.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.76164923138197, + "fos_buckling": 0.060418429312184885, + "fos_yielding": 1.477281971380265, + "deflection": 0.006192116295701187, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.282)" + }, + "parent_node_id": "node_922", + "improvement_over_parent": null + }, + "node_924": { + "node_id": "node_924", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 219.37 kg\n Factor of Safety: 1.43\n Max Deflection: 1.51e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.37270347414267, + "fos_buckling": 1.4323045188803314, + "fos_yielding": 4.1564586158273515, + "deflection": 0.0015138444808667014, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_923", + "improvement_over_parent": null + }, + "node_925": { + "node_id": "node_925", + "content": "MODIFICATION: Increase 1 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32392006416916, + "fos_buckling": 1.5685042008060017, + "fos_yielding": 4.152876042313217, + "deflection": 0.0014500881122127087, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.319)" + }, + "parent_node_id": "node_924", + "improvement_over_parent": null + }, + "node_926": { + "node_id": "node_926", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_925", + "improvement_over_parent": null + }, + "node_927": { + "node_id": "node_927", + "content": "INITIAL DESIGN (Trace 133)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 148.33 kg\n Factor of Safety: 0.69\n Max Deflection: 6.53e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.330379490807, + "fos_buckling": 0.6851042118871652, + "fos_yielding": 3.0802781083862394, + "deflection": 6526990447430.34, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_928": { + "node_id": "node_928", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 159.47 kg\n Factor of Safety: 0.12\n Max Deflection: 5.60e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.47271851088288, + "fos_buckling": 0.11603567227014543, + "fos_yielding": 1.9105713435484357, + "deflection": 0.005600883017204266, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002719)" + }, + "parent_node_id": "node_927", + "improvement_over_parent": null + }, + "node_929": { + "node_id": "node_929", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 179.66 kg\n Factor of Safety: 0.13\n Max Deflection: 4.98e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.65643670608287, + "fos_buckling": 0.1279367853051043, + "fos_yielding": 2.149196638624785, + "deflection": 0.004975437581020821, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.139)" + }, + "parent_node_id": "node_928", + "improvement_over_parent": null + }, + "node_930": { + "node_id": "node_930", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.31 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.30840505745627, + "fos_buckling": 1.5634667437264884, + "fos_yielding": 4.1551537198642245, + "deflection": 0.0014538476588259195, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_929", + "improvement_over_parent": null + }, + "node_931": { + "node_id": "node_931", + "content": "MODIFICATION: Increase 5 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.30 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.30399949929176, + "fos_buckling": 1.5681196958378372, + "fos_yielding": 4.152373392303882, + "deflection": 0.0014501673313914761, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.212)" + }, + "parent_node_id": "node_930", + "improvement_over_parent": null + }, + "node_932": { + "node_id": "node_932", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_931", + "improvement_over_parent": null + }, + "node_933": { + "node_id": "node_933", + "content": "INITIAL DESIGN (Trace 134)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 169.26 kg\n Factor of Safety: 0.48\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.26220143195104, + "fos_buckling": 0.48284539597492504, + "fos_yielding": 3.572804080275114, + "deflection": 0.0019511119157006418, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_934": { + "node_id": "node_934", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 194.53 kg\n Factor of Safety: 0.55\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.52561374896402, + "fos_buckling": 0.5488008388025593, + "fos_yielding": 4.101306168581552, + "deflection": 0.0016990279166077293, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_933", + "improvement_over_parent": null + }, + "node_935": { + "node_id": "node_935", + "content": "MODIFICATION: Increase 2 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 195.81 kg\n Factor of Safety: 0.71\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.80541095891692, + "fos_buckling": 0.7091249983233574, + "fos_yielding": 4.088832021477966, + "deflection": 0.0016891305267279617, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.616)" + }, + "parent_node_id": "node_934", + "improvement_over_parent": null + }, + "node_936": { + "node_id": "node_936", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 208.35 kg\n Factor of Safety: 0.79\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.35376857901318, + "fos_buckling": 0.7917283670506257, + "fos_yielding": 4.099482451764354, + "deflection": 0.001651474604263711, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_935", + "improvement_over_parent": null + }, + "node_937": { + "node_id": "node_937", + "content": "MODIFICATION: Increase 7 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21392972315252, + "fos_buckling": 1.567738319957939, + "fos_yielding": 4.150425325669472, + "deflection": 0.001450761996410969, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.567)" + }, + "parent_node_id": "node_936", + "improvement_over_parent": null + }, + "node_938": { + "node_id": "node_938", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_937", + "improvement_over_parent": null + }, + "node_939": { + "node_id": "node_939", + "content": "INITIAL DESIGN (Trace 135)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 124.53 kg\n Factor of Safety: 0.78\n Max Deflection: 2.56e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.53089903187546, + "fos_buckling": 0.780284452421136, + "fos_yielding": 1.8651821537115463, + "deflection": 0.0025645812116339424, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_940": { + "node_id": "node_940", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 144.20 kg\n Factor of Safety: 0.89\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.20144077074997, + "fos_buckling": 0.8947659995549088, + "fos_yielding": 2.1641665530572953, + "deflection": 0.0022178493619884566, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_939", + "improvement_over_parent": null + }, + "node_941": { + "node_id": "node_941", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 161.80 kg\n Factor of Safety: 1.00\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.80357104486222, + "fos_buckling": 0.9951545807212101, + "fos_yielding": 2.432895918391264, + "deflection": 0.001979008577880591, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.131)" + }, + "parent_node_id": "node_940", + "improvement_over_parent": null + }, + "node_942": { + "node_id": "node_942", + "content": "MODIFICATION: Increase 9 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 170.57 kg\n Factor of Safety: 1.00\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.57481006036676, + "fos_buckling": 0.9951177021967731, + "fos_yielding": 2.43280575992411, + "deflection": 0.0018001238111348828, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.342)" + }, + "parent_node_id": "node_941", + "improvement_over_parent": null + }, + "node_943": { + "node_id": "node_943", + "content": "MODIFICATION: Increase 4 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 174.06 kg\n Factor of Safety: 1.14\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.05817557550313, + "fos_buckling": 1.1394116581978406, + "fos_yielding": 2.8327740792131935, + "deflection": 0.0017661996582990149, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.182)" + }, + "parent_node_id": "node_942", + "improvement_over_parent": null + }, + "node_944": { + "node_id": "node_944", + "content": "MODIFICATION: Increase 4 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 180.22 kg\n Factor of Safety: 1.19\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.2246633968009, + "fos_buckling": 1.1903120542092613, + "fos_yielding": 3.5404083262700805, + "deflection": 0.0017451533652092176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.280)" + }, + "parent_node_id": "node_943", + "improvement_over_parent": null + }, + "node_945": { + "node_id": "node_945", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.26 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.2565994473378, + "fos_buckling": 1.3386231018122934, + "fos_yielding": 4.128031117056056, + "deflection": 0.0014989953228174314, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.183)" + }, + "parent_node_id": "node_944", + "improvement_over_parent": null + }, + "node_946": { + "node_id": "node_946", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 222.80 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.80495706743406, + "fos_buckling": 1.5651906258245667, + "fos_yielding": 4.141119867335697, + "deflection": 0.0014534334438529091, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_945", + "improvement_over_parent": null + }, + "node_947": { + "node_id": "node_947", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_946", + "improvement_over_parent": null + }, + "node_948": { + "node_id": "node_948", + "content": "INITIAL DESIGN (Trace 136)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 83.97 kg\n Factor of Safety: 0.03\n Max Deflection: 1.18e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 83.96692128700023, + "fos_buckling": 0.03457251992420929, + "fos_yielding": 0.7783940551503825, + "deflection": 0.011788363462212558, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_949": { + "node_id": "node_949", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 100.63 kg\n Factor of Safety: 0.04\n Max Deflection: 9.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 100.62702848905644, + "fos_buckling": 0.04065912951339956, + "fos_yielding": 0.9314674891205407, + "deflection": 0.009847494579233314, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_948", + "improvement_over_parent": null + }, + "node_950": { + "node_id": "node_950", + "content": "MODIFICATION: Increase 8 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 104.82 kg\n Factor of Safety: 0.04\n Max Deflection: 9.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 104.81729981200068, + "fos_buckling": 0.04064098185370426, + "fos_yielding": 0.9310517410410294, + "deflection": 0.009708336918400584, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.196)" + }, + "parent_node_id": "node_949", + "improvement_over_parent": null + }, + "node_951": { + "node_id": "node_951", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 116.84 kg\n Factor of Safety: 0.04\n Max Deflection: 8.71e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.8425021782431, + "fos_buckling": 0.044715772506915066, + "fos_yielding": 1.0370107174003194, + "deflection": 0.00871496558210514, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.122)" + }, + "parent_node_id": "node_950", + "improvement_over_parent": null + }, + "node_952": { + "node_id": "node_952", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 150.43 kg\n Factor of Safety: 0.06\n Max Deflection: 6.78e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.4268071472096, + "fos_buckling": 0.055461788927113974, + "fos_yielding": 1.3320119993086788, + "deflection": 0.006781825108419763, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.312)" + }, + "parent_node_id": "node_951", + "improvement_over_parent": null + }, + "node_953": { + "node_id": "node_953", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 189.71 kg\n Factor of Safety: 1.24\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.71247971056226, + "fos_buckling": 1.2387371543972525, + "fos_yielding": 3.7266047179192983, + "deflection": 0.0016588596200753842, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005149)" + }, + "parent_node_id": "node_952", + "improvement_over_parent": null + }, + "node_954": { + "node_id": "node_954", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 201.02 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.01689615629414, + "fos_buckling": 1.439157364222385, + "fos_yielding": 3.7383979445263655, + "deflection": 0.0016085830355177233, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002762)" + }, + "parent_node_id": "node_953", + "improvement_over_parent": null + }, + "node_955": { + "node_id": "node_955", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.15 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.151476214052, + "fos_buckling": 1.5674302247476095, + "fos_yielding": 4.148415889333478, + "deflection": 0.0014510486844270807, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.121)" + }, + "parent_node_id": "node_954", + "improvement_over_parent": null + }, + "node_956": { + "node_id": "node_956", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_955", + "improvement_over_parent": null + }, + "node_957": { + "node_id": "node_957", + "content": "INITIAL DESIGN (Trace 137)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 120.56 kg\n Factor of Safety: 0.06\n Max Deflection: 7.78e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.55987514135468, + "fos_buckling": 0.06323771992084423, + "fos_yielding": 0.966065755645612, + "deflection": 0.007775161472106256, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_958": { + "node_id": "node_958", + "content": "MODIFICATION: Increase 2 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 121.80 kg\n Factor of Safety: 0.09\n Max Deflection: 7.03e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.8041354380618, + "fos_buckling": 0.09335706561827836, + "fos_yielding": 1.4847445582458996, + "deflection": 0.007026969550113555, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.570)" + }, + "parent_node_id": "node_957", + "improvement_over_parent": null + }, + "node_959": { + "node_id": "node_959", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 151.15 kg\n Factor of Safety: 1.11\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.14876491012538, + "fos_buckling": 1.1121497021267157, + "fos_yielding": 2.888495481600121, + "deflection": 0.002127694289451026, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003812)" + }, + "parent_node_id": "node_958", + "improvement_over_parent": null + }, + "node_960": { + "node_id": "node_960", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 190.28 kg\n Factor of Safety: 1.35\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.27812782793762, + "fos_buckling": 1.353396018364057, + "fos_yielding": 3.6344746065742735, + "deflection": 0.0016946570000310262, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.280)" + }, + "parent_node_id": "node_959", + "improvement_over_parent": null + }, + "node_961": { + "node_id": "node_961", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.72 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.7227959311587, + "fos_buckling": 1.5224912532884531, + "fos_yielding": 4.195335454941173, + "deflection": 0.0014704967165809694, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.170)" + }, + "parent_node_id": "node_960", + "improvement_over_parent": null + }, + "node_962": { + "node_id": "node_962", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2772032668567, + "fos_buckling": 1.5682529606873608, + "fos_yielding": 4.151568711440835, + "deflection": 0.0014503123580069167, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_961", + "improvement_over_parent": null + }, + "node_963": { + "node_id": "node_963", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_962", + "improvement_over_parent": null + }, + "node_964": { + "node_id": "node_964", + "content": "INITIAL DESIGN (Trace 138)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0008)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 167.66 kg\n Factor of Safety: 1.24\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.66019072438132, + "fos_buckling": 1.2439909532185986, + "fos_yielding": 3.424334945015361, + "deflection": 0.0018598357664509205, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_965": { + "node_id": "node_965", + "content": "MODIFICATION: Increase 7 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 168.87 kg\n Factor of Safety: 1.24\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.86609133151794, + "fos_buckling": 1.2441513216014957, + "fos_yielding": 3.424334945015361, + "deflection": 0.0018598331153853028, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.339)" + }, + "parent_node_id": "node_964", + "improvement_over_parent": null + }, + "node_966": { + "node_id": "node_966", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 173.89 kg\n Factor of Safety: 1.29\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.88591428241628, + "fos_buckling": 1.2880603443506262, + "fos_yielding": 3.424334945015361, + "deflection": 0.0018180605302555793, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002056)" + }, + "parent_node_id": "node_965", + "improvement_over_parent": null + }, + "node_967": { + "node_id": "node_967", + "content": "MODIFICATION: Increase 8 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 193.51 kg\n Factor of Safety: 1.29\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.5128265696846, + "fos_buckling": 1.285389565682266, + "fos_yielding": 3.4243349450153606, + "deflection": 0.0016378749940441435, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.639)" + }, + "parent_node_id": "node_966", + "improvement_over_parent": null + }, + "node_968": { + "node_id": "node_968", + "content": "MODIFICATION: Increase 8 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0100)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 208.54 kg\n Factor of Safety: 1.28\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.53663330241469, + "fos_buckling": 1.283352637564897, + "fos_yielding": 3.4243349450153606, + "deflection": 0.0015669349234860666, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.330)" + }, + "parent_node_id": "node_967", + "improvement_over_parent": null + }, + "node_969": { + "node_id": "node_969", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0124)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 253.57 kg\n Factor of Safety: 1.52\n Max Deflection: 1.29e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 253.57131489108096, + "fos_buckling": 1.5171489680656394, + "fos_yielding": 4.1955821908528, + "deflection": 0.0012881307757011853, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_968", + "improvement_over_parent": null + }, + "node_970": { + "node_id": "node_970", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0124)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 257.13 kg\n Factor of Safety: 1.37\n Max Deflection: 1.26e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 257.125722226779, + "fos_buckling": 1.3722386435053275, + "fos_yielding": 4.140043170481562, + "deflection": 0.0012588751275848676, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_969", + "improvement_over_parent": null + }, + "node_971": { + "node_id": "node_971", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_970", + "improvement_over_parent": null + }, + "node_972": { + "node_id": "node_972", + "content": "INITIAL DESIGN (Trace 139)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 195.13 kg\n Factor of Safety: 1.07\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.12745433344762, + "fos_buckling": 1.0741017340371846, + "fos_yielding": 3.0488627470233474, + "deflection": 0.0016527338934085116, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_973": { + "node_id": "node_973", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 198.68 kg\n Factor of Safety: 1.08\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.68186166914563, + "fos_buckling": 1.0777535246628174, + "fos_yielding": 3.0592284396254557, + "deflection": 0.0016364131573589707, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_972", + "improvement_over_parent": null + }, + "node_974": { + "node_id": "node_974", + "content": "MODIFICATION: Increase 6 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0095)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 222.50 kg\n Factor of Safety: 1.07\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.4994143787758, + "fos_buckling": 1.0743099138587164, + "fos_yielding": 3.0494536702873525, + "deflection": 0.0014867930077434588, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.642)" + }, + "parent_node_id": "node_973", + "improvement_over_parent": null + }, + "node_975": { + "node_id": "node_975", + "content": "MODIFICATION: Increase 5 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0055)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0095)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 232.72 kg\n Factor of Safety: 1.24\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 232.71996289033513, + "fos_buckling": 1.2388905212918395, + "fos_yielding": 4.203925914088121, + "deflection": 0.0014452523251110884, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.582)" + }, + "parent_node_id": "node_974", + "improvement_over_parent": null + }, + "node_976": { + "node_id": "node_976", + "content": "MODIFICATION: Increase 10 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0055)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0095)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0027)]\n\nPerformance:\n Mass: 233.93 kg\n Factor of Safety: 1.24\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 233.9340254620509, + "fos_buckling": 1.2369184500612211, + "fos_yielding": 4.20427484909676, + "deflection": 0.0014456061878217344, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.391)" + }, + "parent_node_id": "node_975", + "improvement_over_parent": null + }, + "node_977": { + "node_id": "node_977", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_976", + "improvement_over_parent": null + }, + "node_978": { + "node_id": "node_978", + "content": "INITIAL DESIGN (Trace 140)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 152.84 kg\n Factor of Safety: 1.02\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.8398047017041, + "fos_buckling": 1.0227187914884355, + "fos_yielding": 2.8645647593217114, + "deflection": 0.002101230686949168, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_979": { + "node_id": "node_979", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 182.80 kg\n Factor of Safety: 1.19\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.7951600092821, + "fos_buckling": 1.1918990546973094, + "fos_yielding": 3.424024711366712, + "deflection": 0.0017602964782507675, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.211)" + }, + "parent_node_id": "node_978", + "improvement_over_parent": null + }, + "node_980": { + "node_id": "node_980", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.09 kg\n Factor of Safety: 1.40\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.09459920503315, + "fos_buckling": 1.3996584855734018, + "fos_yielding": 4.156998176370015, + "deflection": 0.0014524910200323054, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.236)" + }, + "parent_node_id": "node_979", + "improvement_over_parent": null + }, + "node_981": { + "node_id": "node_981", + "content": "MODIFICATION: Increase 2 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28164762297405, + "fos_buckling": 1.5681509548648693, + "fos_yielding": 4.1518055695033595, + "deflection": 0.0014502835954317904, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.550)" + }, + "parent_node_id": "node_980", + "improvement_over_parent": null + }, + "node_982": { + "node_id": "node_982", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_981", + "improvement_over_parent": null + }, + "node_983": { + "node_id": "node_983", + "content": "INITIAL DESIGN (Trace 141)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0010)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 107.05 kg\n Factor of Safety: 0.38\n Max Deflection: 3.34e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.0514356056448, + "fos_buckling": 0.375176434970554, + "fos_yielding": 2.0765478101462045, + "deflection": 0.0033367387472115003, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_984": { + "node_id": "node_984", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0013)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 130.72 kg\n Factor of Safety: 0.45\n Max Deflection: 2.73e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.71570438746863, + "fos_buckling": 0.44930793599709795, + "fos_yielding": 2.5434314772946505, + "deflection": 0.0027341383793556963, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_983", + "improvement_over_parent": null + }, + "node_985": { + "node_id": "node_985", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0015)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 149.52 kg\n Factor of Safety: 0.51\n Max Deflection: 2.39e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.52148873718272, + "fos_buckling": 0.506015966677918, + "fos_yielding": 2.9168560371400813, + "deflection": 0.002391218378901137, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.153)" + }, + "parent_node_id": "node_984", + "improvement_over_parent": null + }, + "node_986": { + "node_id": "node_986", + "content": "MODIFICATION: Increase 0 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 151.55 kg\n Factor of Safety: 0.66\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.54781829829074, + "fos_buckling": 0.6626209284238074, + "fos_yielding": 2.941607745809859, + "deflection": 0.0022473450650062465, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.330)" + }, + "parent_node_id": "node_985", + "improvement_over_parent": null + }, + "node_987": { + "node_id": "node_987", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n\nPerformance:\n Mass: 155.25 kg\n Factor of Safety: 0.77\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.24933500711163, + "fos_buckling": 0.7748684026684435, + "fos_yielding": 2.9502146622174212, + "deflection": 0.0021902163796357088, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001654)" + }, + "parent_node_id": "node_986", + "improvement_over_parent": null + }, + "node_988": { + "node_id": "node_988", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 179.49 kg\n Factor of Safety: 0.88\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.49357875794337, + "fos_buckling": 0.8767763723059835, + "fos_yielding": 3.408970943437783, + "deflection": 0.0018960677605835352, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_987", + "improvement_over_parent": null + }, + "node_989": { + "node_id": "node_989", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 217.16 kg\n Factor of Safety: 1.03\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.16277010582286, + "fos_buckling": 1.0254620317685292, + "fos_yielding": 4.120662202241784, + "deflection": 0.0015692605363912002, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.230)" + }, + "parent_node_id": "node_988", + "improvement_over_parent": null + }, + "node_990": { + "node_id": "node_990", + "content": "MODIFICATION: Increase 0 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22949239032573, + "fos_buckling": 1.5677886139525434, + "fos_yielding": 4.150602504108293, + "deflection": 0.0014505556250017358, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.560)" + }, + "parent_node_id": "node_989", + "improvement_over_parent": null + }, + "node_991": { + "node_id": "node_991", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_990", + "improvement_over_parent": null + }, + "node_992": { + "node_id": "node_992", + "content": "INITIAL DESIGN (Trace 142)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 91.21 kg\n Factor of Safety: 0.03\n Max Deflection: 1.84e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 91.20630799291412, + "fos_buckling": 0.03430590591682225, + "fos_yielding": 0.7818720697073392, + "deflection": 0.018362451452138582, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_993": { + "node_id": "node_993", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n\nPerformance:\n Mass: 94.42 kg\n Factor of Safety: 0.07\n Max Deflection: 9.21e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 94.42308469860704, + "fos_buckling": 0.07305975905594828, + "fos_yielding": 1.1300279497086028, + "deflection": 0.009208354231533579, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001283)" + }, + "parent_node_id": "node_992", + "improvement_over_parent": null + }, + "node_994": { + "node_id": "node_994", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 116.04 kg\n Factor of Safety: 0.09\n Max Deflection: 7.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.03935203379024, + "fos_buckling": 0.0878651257183904, + "fos_yielding": 1.3865801137482274, + "deflection": 0.00750177515943283, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.242)" + }, + "parent_node_id": "node_993", + "improvement_over_parent": null + }, + "node_995": { + "node_id": "node_995", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 144.45 kg\n Factor of Safety: 0.11\n Max Deflection: 6.04e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.45381454913175, + "fos_buckling": 0.10624963933894754, + "fos_yielding": 1.7226133288858196, + "deflection": 0.006035436304430961, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.263)" + }, + "parent_node_id": "node_994", + "improvement_over_parent": null + }, + "node_996": { + "node_id": "node_996", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 178.53 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.52783110421564, + "fos_buckling": 1.3019082115075113, + "fos_yielding": 3.3229892788255677, + "deflection": 0.001808895556616487, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004472)" + }, + "parent_node_id": "node_995", + "improvement_over_parent": null + }, + "node_997": { + "node_id": "node_997", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.40510176151736, + "fos_buckling": 1.567921134116129, + "fos_yielding": 4.154949308733341, + "deflection": 0.0014496181735350845, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_996", + "improvement_over_parent": null + }, + "node_998": { + "node_id": "node_998", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_997", + "improvement_over_parent": null + }, + "node_999": { + "node_id": "node_999", + "content": "INITIAL DESIGN (Trace 143)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 154.46 kg\n Factor of Safety: 1.11\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.45976408615076, + "fos_buckling": 1.1055888274558623, + "fos_yielding": 2.5251509628862845, + "deflection": 0.002462830048553586, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1000": { + "node_id": "node_1000", + "content": "MODIFICATION: Increase 6 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 159.89 kg\n Factor of Safety: 1.23\n Max Deflection: 2.36e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.8867771046302, + "fos_buckling": 1.2312254325572454, + "fos_yielding": 2.523697350171423, + "deflection": 0.0023569089339121763, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.196)" + }, + "parent_node_id": "node_999", + "improvement_over_parent": null + }, + "node_1001": { + "node_id": "node_1001", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 165.28 kg\n Factor of Safety: 1.19\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.28210760399182, + "fos_buckling": 1.1911451982387984, + "fos_yielding": 2.6109872258015403, + "deflection": 0.002341668445890756, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001551)" + }, + "parent_node_id": "node_1000", + "improvement_over_parent": null + }, + "node_1002": { + "node_id": "node_1002", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 170.25 kg\n Factor of Safety: 0.58\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.24974809296592, + "fos_buckling": 0.5790600063774365, + "fos_yielding": 2.7599144210131117, + "deflection": 0.002186711489381389, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002033)" + }, + "parent_node_id": "node_1001", + "improvement_over_parent": null + }, + "node_1003": { + "node_id": "node_1003", + "content": "MODIFICATION: Increase 0 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 173.46 kg\n Factor of Safety: 0.94\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.46394646493846, + "fos_buckling": 0.9376264659812342, + "fos_yielding": 3.334229084911939, + "deflection": 0.001958682488346117, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.553)" + }, + "parent_node_id": "node_1002", + "improvement_over_parent": null + }, + "node_1004": { + "node_id": "node_1004", + "content": "MODIFICATION: Increase 0 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 178.65 kg\n Factor of Safety: 1.31\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.65081101312833, + "fos_buckling": 1.314419987137484, + "fos_yielding": 3.3578912193771524, + "deflection": 0.0017948953399906417, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.600)" + }, + "parent_node_id": "node_1003", + "improvement_over_parent": null + }, + "node_1005": { + "node_id": "node_1005", + "content": "MODIFICATION: Increase 8 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0059)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 188.37 kg\n Factor of Safety: 1.32\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.3659861786965, + "fos_buckling": 1.3179469711680656, + "fos_yielding": 3.3545066280612037, + "deflection": 0.0016895604505822424, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.311)" + }, + "parent_node_id": "node_1004", + "improvement_over_parent": null + }, + "node_1006": { + "node_id": "node_1006", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 233.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.37e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 233.16227399370482, + "fos_buckling": 1.5738502803806171, + "fos_yielding": 4.154923203289255, + "deflection": 0.0013690492034944437, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.263)" + }, + "parent_node_id": "node_1005", + "improvement_over_parent": null + }, + "node_1007": { + "node_id": "node_1007", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1006", + "improvement_over_parent": null + }, + "node_1008": { + "node_id": "node_1008", + "content": "INITIAL DESIGN (Trace 144)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 98.89 kg\n Factor of Safety: 0.08\n Max Deflection: 9.58e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 98.88609161514943, + "fos_buckling": 0.07835657043710109, + "fos_yielding": 0.8924727402949635, + "deflection": 9577739002496.318, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1009": { + "node_id": "node_1009", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 101.17 kg\n Factor of Safety: 0.80\n Max Deflection: 1.17e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 101.17338926396098, + "fos_buckling": 0.8024955874154857, + "fos_yielding": 1.9188335909399135, + "deflection": 11699451298547.58, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001225)" + }, + "parent_node_id": "node_1008", + "improvement_over_parent": null + }, + "node_1010": { + "node_id": "node_1010", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 128.60 kg\n Factor of Safety: 0.78\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.60453949408668, + "fos_buckling": 0.7822709830983947, + "fos_yielding": 1.8704748825112651, + "deflection": 0.002371043845427536, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003549)" + }, + "parent_node_id": "node_1009", + "improvement_over_parent": null + }, + "node_1011": { + "node_id": "node_1011", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 156.28 kg\n Factor of Safety: 0.94\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.27519139842022, + "fos_buckling": 0.9381891222958163, + "fos_yielding": 2.2798818341691134, + "deflection": 0.0019565333125986578, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.230)" + }, + "parent_node_id": "node_1010", + "improvement_over_parent": null + }, + "node_1012": { + "node_id": "node_1012", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 166.08 kg\n Factor of Safety: 0.94\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.081925399686, + "fos_buckling": 0.9415131776296098, + "fos_yielding": 2.2879595801066746, + "deflection": 0.0018827981948035073, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002369)" + }, + "parent_node_id": "node_1011", + "improvement_over_parent": null + }, + "node_1013": { + "node_id": "node_1013", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 212.71 kg\n Factor of Safety: 1.18\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.70602874371178, + "fos_buckling": 1.1804621111076026, + "fos_yielding": 2.9456802495696386, + "deflection": 0.0014751910692395477, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_1012", + "improvement_over_parent": null + }, + "node_1014": { + "node_id": "node_1014", + "content": "MODIFICATION: Increase 4 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0038)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 215.20 kg\n Factor of Safety: 1.18\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.20061564975478, + "fos_buckling": 1.1795488010963682, + "fos_yielding": 2.943401210508145, + "deflection": 0.0014713842416371162, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.468)" + }, + "parent_node_id": "node_1013", + "improvement_over_parent": null + }, + "node_1015": { + "node_id": "node_1015", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1014", + "improvement_over_parent": null + }, + "node_1016": { + "node_id": "node_1016", + "content": "INITIAL DESIGN (Trace 145)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 171.78 kg\n Factor of Safety: 1.23\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.78185614358682, + "fos_buckling": 1.2299070890374655, + "fos_yielding": 3.3764099974370003, + "deflection": 0.0018860709747836703, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1017": { + "node_id": "node_1017", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 176.73 kg\n Factor of Safety: 1.27\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.73132513828818, + "fos_buckling": 1.272055053886454, + "fos_yielding": 3.376409997436999, + "deflection": 0.0018228775353575676, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002025)" + }, + "parent_node_id": "node_1016", + "improvement_over_parent": null + }, + "node_1018": { + "node_id": "node_1018", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.71 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.70935465708945, + "fos_buckling": 1.5224582371071322, + "fos_yielding": 4.19521834131578, + "deflection": 0.0014705870301723748, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.267)" + }, + "parent_node_id": "node_1017", + "improvement_over_parent": null + }, + "node_1019": { + "node_id": "node_1019", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26376199278747, + "fos_buckling": 1.568042940450356, + "fos_yielding": 4.15145449729858, + "deflection": 0.0014504029784054267, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1018", + "improvement_over_parent": null + }, + "node_1020": { + "node_id": "node_1020", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1019", + "improvement_over_parent": null + }, + "node_1021": { + "node_id": "node_1021", + "content": "INITIAL DESIGN (Trace 146)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 114.07 kg\n Factor of Safety: 0.04\n Max Deflection: 8.92e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.0721794822576, + "fos_buckling": 0.04379036938822589, + "fos_yielding": 1.012686167568761, + "deflection": 0.008924819492807105, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1022": { + "node_id": "node_1022", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n\nPerformance:\n Mass: 143.84 kg\n Factor of Safety: 0.99\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.84408985557556, + "fos_buckling": 0.9914885445627436, + "fos_yielding": 2.8285814669020737, + "deflection": 0.002181044824924081, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003823)" + }, + "parent_node_id": "node_1021", + "improvement_over_parent": null + }, + "node_1023": { + "node_id": "node_1023", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 172.97 kg\n Factor of Safety: 1.15\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.97084234129449, + "fos_buckling": 1.151278361762203, + "fos_yielding": 3.399451361888268, + "deflection": 0.0018174428650444354, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_1022", + "improvement_over_parent": null + }, + "node_1024": { + "node_id": "node_1024", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 210.93 kg\n Factor of Safety: 1.34\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.92835417978856, + "fos_buckling": 1.3404377043282498, + "fos_yielding": 4.142451005371194, + "deflection": 0.00149430419580446, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.241)" + }, + "parent_node_id": "node_1023", + "improvement_over_parent": null + }, + "node_1025": { + "node_id": "node_1025", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.48 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4767117998848, + "fos_buckling": 1.5692526079165048, + "fos_yielding": 4.155562784037358, + "deflection": 0.0014489682986296732, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1024", + "improvement_over_parent": null + }, + "node_1026": { + "node_id": "node_1026", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1025", + "improvement_over_parent": null + }, + "node_1027": { + "node_id": "node_1027", + "content": "INITIAL DESIGN (Trace 147)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.92 kg\n Factor of Safety: 1.03\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.92261847885644, + "fos_buckling": 1.0342591514178199, + "fos_yielding": 4.122033268415697, + "deflection": 0.0015833115601993054, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1028": { + "node_id": "node_1028", + "content": "MODIFICATION: Increase 4 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.21 kg\n Factor of Safety: 0.96\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.21123210205252, + "fos_buckling": 0.9617980370505915, + "fos_yielding": 4.116699613015537, + "deflection": 0.0015803298383813137, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.650)" + }, + "parent_node_id": "node_1027", + "improvement_over_parent": null + }, + "node_1029": { + "node_id": "node_1029", + "content": "MODIFICATION: Increase 0 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.07 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.07186632654225, + "fos_buckling": 1.3234892657158963, + "fos_yielding": 4.137583056074547, + "deflection": 0.0014967314129112424, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.408)" + }, + "parent_node_id": "node_1028", + "improvement_over_parent": null + }, + "node_1030": { + "node_id": "node_1030", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24620920327092, + "fos_buckling": 1.5679828214245064, + "fos_yielding": 4.15133004994511, + "deflection": 0.0014505553132744254, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1029", + "improvement_over_parent": null + }, + "node_1031": { + "node_id": "node_1031", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1030", + "improvement_over_parent": null + }, + "node_1032": { + "node_id": "node_1032", + "content": "INITIAL DESIGN (Trace 148)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n\nPerformance:\n Mass: 106.97 kg\n Factor of Safety: 0.08\n Max Deflection: 8.13e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.96588745553231, + "fos_buckling": 0.08173692584979211, + "fos_yielding": 1.2789871383444504, + "deflection": 0.008134086627026605, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1033": { + "node_id": "node_1033", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 140.12 kg\n Factor of Safety: 0.10\n Max Deflection: 6.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.1197536045033, + "fos_buckling": 0.1035241712805874, + "fos_yielding": 1.6714445102060027, + "deflection": 0.006220637957146744, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.332)" + }, + "parent_node_id": "node_1032", + "improvement_over_parent": null + }, + "node_1034": { + "node_id": "node_1034", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 180.71 kg\n Factor of Safety: 0.13\n Max Deflection: 4.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.7113910147929, + "fos_buckling": 0.1279429979462277, + "fos_yielding": 2.149425849915879, + "deflection": 0.004833949255997125, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.318)" + }, + "parent_node_id": "node_1033", + "improvement_over_parent": null + }, + "node_1035": { + "node_id": "node_1035", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3633593661663, + "fos_buckling": 1.568176855838676, + "fos_yielding": 4.153708750450108, + "deflection": 0.0014498250821121592, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1034", + "improvement_over_parent": null + }, + "node_1036": { + "node_id": "node_1036", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1035", + "improvement_over_parent": null + }, + "node_1037": { + "node_id": "node_1037", + "content": "INITIAL DESIGN (Trace 149)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1038": { + "node_id": "node_1038", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 211.33 kg\n Factor of Safety: 1.40\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.33347647882007, + "fos_buckling": 1.3961623040571727, + "fos_yielding": 4.196455815373248, + "deflection": 0.001519625808513644, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1037", + "improvement_over_parent": null + }, + "node_1039": { + "node_id": "node_1039", + "content": "MODIFICATION: Increase 1 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.65 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.651749601212, + "fos_buckling": 1.5232374994481666, + "fos_yielding": 4.196455815373248, + "deflection": 0.0014700803975903002, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.256)" + }, + "parent_node_id": "node_1038", + "improvement_over_parent": null + }, + "node_1040": { + "node_id": "node_1040", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26485421597266, + "fos_buckling": 1.5679721666297783, + "fos_yielding": 4.151338596745352, + "deflection": 0.001450359945323577, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1039", + "improvement_over_parent": null + }, + "node_1041": { + "node_id": "node_1041", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1040", + "improvement_over_parent": null + }, + "node_1042": { + "node_id": "node_1042", + "content": "INITIAL DESIGN (Trace 150)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 106.25 kg\n Factor of Safety: 0.80\n Max Deflection: 3.09e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.2459480644801, + "fos_buckling": 0.7971895170931514, + "fos_yielding": 2.0611276550192703, + "deflection": 0.003091051992211056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1043": { + "node_id": "node_1043", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 120.64 kg\n Factor of Safety: 0.89\n Max Deflection: 2.72e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.63560857897234, + "fos_buckling": 0.8946943908762431, + "fos_yielding": 2.3395733601774276, + "deflection": 0.002724173323095493, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.142)" + }, + "parent_node_id": "node_1042", + "improvement_over_parent": null + }, + "node_1044": { + "node_id": "node_1044", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 146.12 kg\n Factor of Safety: 1.06\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.12052248624124, + "fos_buckling": 1.0612940362979488, + "fos_yielding": 2.8323036046699066, + "deflection": 0.0022517228975986034, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.224)" + }, + "parent_node_id": "node_1043", + "improvement_over_parent": null + }, + "node_1045": { + "node_id": "node_1045", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 150.26 kg\n Factor of Safety: 1.12\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.2643417776507, + "fos_buckling": 1.1226075232153372, + "fos_yielding": 2.797654894081226, + "deflection": 0.002145141087201927, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001675)" + }, + "parent_node_id": "node_1044", + "improvement_over_parent": null + }, + "node_1046": { + "node_id": "node_1046", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 186.23 kg\n Factor of Safety: 1.35\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.2284615962532, + "fos_buckling": 1.3501260926202627, + "fos_yielding": 3.465016251021048, + "deflection": 0.0017348107213887008, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.258)" + }, + "parent_node_id": "node_1045", + "improvement_over_parent": null + }, + "node_1047": { + "node_id": "node_1047", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.195860422049, + "fos_buckling": 1.5676482202126103, + "fos_yielding": 4.15010209480075, + "deflection": 0.0014508534827345264, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_1046", + "improvement_over_parent": null + }, + "node_1048": { + "node_id": "node_1048", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1047", + "improvement_over_parent": null + }, + "node_1049": { + "node_id": "node_1049", + "content": "INITIAL DESIGN (Trace 151)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 115.99 kg\n Factor of Safety: 0.05\n Max Deflection: 1.32e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.99144808798135, + "fos_buckling": 0.05283529628314465, + "fos_yielding": 1.0522095342538949, + "deflection": 0.013154245322984936, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1050": { + "node_id": "node_1050", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n\nPerformance:\n Mass: 152.91 kg\n Factor of Safety: 0.11\n Max Deflection: 5.70e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.91307870284123, + "fos_buckling": 0.11148726513344011, + "fos_yielding": 1.8223853952370066, + "deflection": 0.005704148362324885, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004814)" + }, + "parent_node_id": "node_1049", + "improvement_over_parent": null + }, + "node_1051": { + "node_id": "node_1051", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 180.62 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.6173886008037, + "fos_buckling": 0.1278891070941562, + "fos_yielding": 2.1483181183430617, + "deflection": 0.004836445412966479, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_1050", + "improvement_over_parent": null + }, + "node_1052": { + "node_id": "node_1052", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2693569521771, + "fos_buckling": 1.5680923351834637, + "fos_yielding": 4.151538881838573, + "deflection": 0.0014503706441321353, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1051", + "improvement_over_parent": null + }, + "node_1053": { + "node_id": "node_1053", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1052", + "improvement_over_parent": null + }, + "node_1054": { + "node_id": "node_1054", + "content": "INITIAL DESIGN (Trace 152)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1055": { + "node_id": "node_1055", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.65 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.64548007946038, + "fos_buckling": 1.5232385072695878, + "fos_yielding": 4.196455815373248, + "deflection": 0.0014701573532745083, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1054", + "improvement_over_parent": null + }, + "node_1056": { + "node_id": "node_1056", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25858469422104, + "fos_buckling": 1.5680097193854248, + "fos_yielding": 4.1513431428331, + "deflection": 0.0014504397253500814, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1055", + "improvement_over_parent": null + }, + "node_1057": { + "node_id": "node_1057", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1056", + "improvement_over_parent": null + }, + "node_1058": { + "node_id": "node_1058", + "content": "INITIAL DESIGN (Trace 153)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 88.61 kg\n Factor of Safety: 0.07\n Max Deflection: 9.37e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 88.6086682202284, + "fos_buckling": 0.07212632378322818, + "fos_yielding": 1.1141793908192954, + "deflection": 0.009368176518684278, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1059": { + "node_id": "node_1059", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 113.46 kg\n Factor of Safety: 0.09\n Max Deflection: 7.33e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.46475204416144, + "fos_buckling": 0.08998923535357593, + "fos_yielding": 1.4242508759102261, + "deflection": 0.007325705032263556, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.297)" + }, + "parent_node_id": "node_1058", + "improvement_over_parent": null + }, + "node_1060": { + "node_id": "node_1060", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 141.60 kg\n Factor of Safety: 1.07\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.59626658269656, + "fos_buckling": 1.0725209107929008, + "fos_yielding": 2.7706909437050666, + "deflection": 0.002217565765312378, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003645)" + }, + "parent_node_id": "node_1059", + "improvement_over_parent": null + }, + "node_1061": { + "node_id": "node_1061", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 147.28 kg\n Factor of Safety: 1.10\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.27727652606632, + "fos_buckling": 1.1029225684350705, + "fos_yielding": 2.7423416029573087, + "deflection": 0.0021882355762287906, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001638)" + }, + "parent_node_id": "node_1060", + "improvement_over_parent": null + }, + "node_1062": { + "node_id": "node_1062", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 181.91 kg\n Factor of Safety: 1.32\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.91379631863168, + "fos_buckling": 1.3235722881702943, + "fos_yielding": 3.3851842323951984, + "deflection": 0.0017754738017447809, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.253)" + }, + "parent_node_id": "node_1061", + "improvement_over_parent": null + }, + "node_1063": { + "node_id": "node_1063", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 202.66 kg\n Factor of Safety: 1.45\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.65940479351588, + "fos_buckling": 1.4487558646935377, + "fos_yielding": 3.769834690472476, + "deflection": 0.0015958100790546903, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.124)" + }, + "parent_node_id": "node_1062", + "improvement_over_parent": null + }, + "node_1064": { + "node_id": "node_1064", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31197110124123, + "fos_buckling": 1.5682118319456089, + "fos_yielding": 4.152476610693342, + "deflection": 0.0014501092960166031, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.112)" + }, + "parent_node_id": "node_1063", + "improvement_over_parent": null + }, + "node_1065": { + "node_id": "node_1065", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1064", + "improvement_over_parent": null + }, + "node_1066": { + "node_id": "node_1066", + "content": "INITIAL DESIGN (Trace 154)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 140.61 kg\n Factor of Safety: 0.90\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.60951019517, + "fos_buckling": 0.900762639347632, + "fos_yielding": 2.9785922851075335, + "deflection": 0.0024460741792744494, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1067": { + "node_id": "node_1067", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n\nPerformance:\n Mass: 144.29 kg\n Factor of Safety: 0.89\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.29001767188254, + "fos_buckling": 0.8946907348437226, + "fos_yielding": 2.9842403376131146, + "deflection": 0.002447589914238893, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001644)" + }, + "parent_node_id": "node_1066", + "improvement_over_parent": null + }, + "node_1068": { + "node_id": "node_1068", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 148.67 kg\n Factor of Safety: 0.79\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.6661468603336, + "fos_buckling": 0.7876725910973787, + "fos_yielding": 2.935223942229536, + "deflection": 0.0022902931549856737, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001775)" + }, + "parent_node_id": "node_1067", + "improvement_over_parent": null + }, + "node_1069": { + "node_id": "node_1069", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 182.47 kg\n Factor of Safety: 0.94\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.4735325338105, + "fos_buckling": 0.9364576032684722, + "fos_yielding": 3.5976814149519987, + "deflection": 0.0018680096888270064, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.245)" + }, + "parent_node_id": "node_1068", + "improvement_over_parent": null + }, + "node_1070": { + "node_id": "node_1070", + "content": "MODIFICATION: Increase 1 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 185.59 kg\n Factor of Safety: 0.90\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.59315351901057, + "fos_buckling": 0.8975274647164799, + "fos_yielding": 3.595036935658378, + "deflection": 0.001802946104296658, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.277)" + }, + "parent_node_id": "node_1069", + "improvement_over_parent": null + }, + "node_1071": { + "node_id": "node_1071", + "content": "MODIFICATION: Increase 7 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0036)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 188.95 kg\n Factor of Safety: 0.91\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.9480283788992, + "fos_buckling": 0.9105227347788295, + "fos_yielding": 3.5959443948866707, + "deflection": 0.0017986004955062918, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.342)" + }, + "parent_node_id": "node_1070", + "improvement_over_parent": null + }, + "node_1072": { + "node_id": "node_1072", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0042)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 216.50 kg\n Factor of Safety: 1.02\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.50173792537757, + "fos_buckling": 1.0174711074956622, + "fos_yielding": 4.117977974812917, + "deflection": 0.0015709294712777256, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.160)" + }, + "parent_node_id": "node_1071", + "improvement_over_parent": null + }, + "node_1073": { + "node_id": "node_1073", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1072", + "improvement_over_parent": null + }, + "node_1074": { + "node_id": "node_1074", + "content": "INITIAL DESIGN (Trace 155)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0023)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 142.83 kg\n Factor of Safety: 0.51\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.83168715053813, + "fos_buckling": 0.507231585619263, + "fos_yielding": 2.8409935028270428, + "deflection": 0.0024521052859358197, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1075": { + "node_id": "node_1075", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 169.86 kg\n Factor of Safety: 0.59\n Max Deflection: 2.06e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.8626850349225, + "fos_buckling": 0.5903670332383555, + "fos_yielding": 3.375254099887472, + "deflection": 0.0020627659261943923, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.203)" + }, + "parent_node_id": "node_1074", + "improvement_over_parent": null + }, + "node_1076": { + "node_id": "node_1076", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 205.94 kg\n Factor of Safety: 0.70\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.9444377733611, + "fos_buckling": 0.6952927825077818, + "fos_yielding": 4.086564695461298, + "deflection": 0.0017021977752255514, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_1075", + "improvement_over_parent": null + }, + "node_1077": { + "node_id": "node_1077", + "content": "MODIFICATION: Increase 7 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.92 kg\n Factor of Safety: 1.18\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.92287318246377, + "fos_buckling": 1.1823629611285, + "fos_yielding": 4.129711347958442, + "deflection": 0.0015305331732124285, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.408)" + }, + "parent_node_id": "node_1076", + "improvement_over_parent": null + }, + "node_1078": { + "node_id": "node_1078", + "content": "MODIFICATION: Increase 7 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20001362493832, + "fos_buckling": 1.567634417232448, + "fos_yielding": 4.1501216741767575, + "deflection": 0.0014507914785538447, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.220)" + }, + "parent_node_id": "node_1077", + "improvement_over_parent": null + }, + "node_1079": { + "node_id": "node_1079", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1078", + "improvement_over_parent": null + }, + "node_1080": { + "node_id": "node_1080", + "content": "INITIAL DESIGN (Trace 156)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1081": { + "node_id": "node_1081", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 129.16 kg\n Factor of Safety: 0.02\n Max Deflection: 1.09e+14 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.1570221895916, + "fos_buckling": 0.01906893071227973, + "fos_yielding": 0.27563836151200366, + "deflection": 109263014778413.17, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001146)" + }, + "parent_node_id": "node_1080", + "improvement_over_parent": null + }, + "node_1082": { + "node_id": "node_1082", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 164.04 kg\n Factor of Safety: 1.21\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.0392587757402, + "fos_buckling": 1.2124908066598354, + "fos_yielding": 3.358567420054221, + "deflection": 0.0020093527294574396, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004528)" + }, + "parent_node_id": "node_1081", + "improvement_over_parent": null + }, + "node_1083": { + "node_id": "node_1083", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 170.93 kg\n Factor of Safety: 0.75\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.92784255322377, + "fos_buckling": 0.7520115208922395, + "fos_yielding": 3.305582680081779, + "deflection": 0.0019386039099626535, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002012)" + }, + "parent_node_id": "node_1082", + "improvement_over_parent": null + }, + "node_1084": { + "node_id": "node_1084", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 213.66 kg\n Factor of Safety: 0.91\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.6643383392737, + "fos_buckling": 0.9094780160128382, + "fos_yielding": 4.1274646560233395, + "deflection": 0.0015547125497851213, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.274)" + }, + "parent_node_id": "node_1083", + "improvement_over_parent": null + }, + "node_1085": { + "node_id": "node_1085", + "content": "MODIFICATION: Increase 0 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.13 kg\n Factor of Safety: 1.13\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.12967527032987, + "fos_buckling": 1.131960461100037, + "fos_yielding": 4.140087099665429, + "deflection": 0.0014996944358540445, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.263)" + }, + "parent_node_id": "node_1084", + "improvement_over_parent": null + }, + "node_1086": { + "node_id": "node_1086", + "content": "MODIFICATION: Increase 2 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0083)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 227.88 kg\n Factor of Safety: 0.76\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 227.88375764873507, + "fos_buckling": 0.7645865563250908, + "fos_yielding": 4.9357705721946665, + "deflection": 0.0014843891719985057, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.350)" + }, + "parent_node_id": "node_1085", + "improvement_over_parent": null + }, + "node_1087": { + "node_id": "node_1087", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0083)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 233.06 kg\n Factor of Safety: 0.91\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 233.05810052546374, + "fos_buckling": 0.9085159754456511, + "fos_yielding": 4.800323456384876, + "deflection": 0.0014399802456603827, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1086", + "improvement_over_parent": null + }, + "node_1088": { + "node_id": "node_1088", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1087", + "improvement_over_parent": null + }, + "node_1089": { + "node_id": "node_1089", + "content": "INITIAL DESIGN (Trace 157)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 86.55 kg\n Factor of Safety: 0.03\n Max Deflection: 1.24e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 86.54631754514598, + "fos_buckling": 0.03459450292668539, + "fos_yielding": 0.7789483129901519, + "deflection": 0.012369868753948712, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1090": { + "node_id": "node_1090", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 93.12 kg\n Factor of Safety: 0.03\n Max Deflection: 1.22e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 93.121896745253, + "fos_buckling": 0.03457025545031509, + "fos_yielding": 0.7784023438558956, + "deflection": 0.012187022713815575, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001552)" + }, + "parent_node_id": "node_1089", + "improvement_over_parent": null + }, + "node_1091": { + "node_id": "node_1091", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n\nPerformance:\n Mass: 115.97 kg\n Factor of Safety: 0.78\n Max Deflection: 2.77e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.9715613912424, + "fos_buckling": 0.7812624123578511, + "fos_yielding": 2.1828122066205937, + "deflection": 0.0027660473466482164, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.002893)" + }, + "parent_node_id": "node_1090", + "improvement_over_parent": null + }, + "node_1092": { + "node_id": "node_1092", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n\nPerformance:\n Mass: 140.35 kg\n Factor of Safety: 0.94\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.35443346971124, + "fos_buckling": 0.9411757452273647, + "fos_yielding": 2.6403670319046726, + "deflection": 0.0022889157619766696, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.222)" + }, + "parent_node_id": "node_1091", + "improvement_over_parent": null + }, + "node_1093": { + "node_id": "node_1093", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n\nPerformance:\n Mass: 168.18 kg\n Factor of Safety: 1.12\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.18207741627242, + "fos_buckling": 1.1216796675413696, + "fos_yielding": 3.1619697614906954, + "deflection": 0.0019134269836377253, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.212)" + }, + "parent_node_id": "node_1092", + "improvement_over_parent": null + }, + "node_1094": { + "node_id": "node_1094", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 195.35 kg\n Factor of Safety: 1.30\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.3480649184866, + "fos_buckling": 1.2957481980735353, + "fos_yielding": 3.6705531404373706, + "deflection": 0.0016500627407709124, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.175)" + }, + "parent_node_id": "node_1093", + "improvement_over_parent": null + }, + "node_1095": { + "node_id": "node_1095", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 221.50 kg\n Factor of Safety: 1.46\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.49905711487898, + "fos_buckling": 1.4612254142058745, + "fos_yielding": 4.159552144361274, + "deflection": 0.0014575676336498972, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.147)" + }, + "parent_node_id": "node_1094", + "improvement_over_parent": null + }, + "node_1096": { + "node_id": "node_1096", + "content": "MODIFICATION: Increase 5 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.37444394234905, + "fos_buckling": 1.5686922338362697, + "fos_yielding": 4.1536520883126755, + "deflection": 0.0014496929584273898, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.481)" + }, + "parent_node_id": "node_1095", + "improvement_over_parent": null + }, + "node_1097": { + "node_id": "node_1097", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1096", + "improvement_over_parent": null + }, + "node_1098": { + "node_id": "node_1098", + "content": "INITIAL DESIGN (Trace 158)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 149.73 kg\n Factor of Safety: 1.02\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.7321703654782, + "fos_buckling": 1.0247009928745923, + "fos_yielding": 2.9440797122489664, + "deflection": 0.0020961430368134555, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1099": { + "node_id": "node_1099", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 181.85 kg\n Factor of Safety: 1.20\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.85423918975312, + "fos_buckling": 1.1972978010958693, + "fos_yielding": 3.573487619392379, + "deflection": 0.001729733942402865, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_1098", + "improvement_over_parent": null + }, + "node_1100": { + "node_id": "node_1100", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.82 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.8224410846766, + "fos_buckling": 1.3397674200135319, + "fos_yielding": 4.140438267844801, + "deflection": 0.0014950504421952849, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.175)" + }, + "parent_node_id": "node_1099", + "improvement_over_parent": null + }, + "node_1101": { + "node_id": "node_1101", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.37079870477285, + "fos_buckling": 1.568658383740419, + "fos_yielding": 4.153545532380188, + "deflection": 0.001449686282139566, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1100", + "improvement_over_parent": null + }, + "node_1102": { + "node_id": "node_1102", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1101", + "improvement_over_parent": null + }, + "node_1103": { + "node_id": "node_1103", + "content": "INITIAL DESIGN (Trace 159)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n\nPerformance:\n Mass: 114.90 kg\n Factor of Safety: 0.03\n Max Deflection: 1.01e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.90318634444215, + "fos_buckling": 0.030843575686881362, + "fos_yielding": 0.6875768149531771, + "deflection": 0.010074938961915714, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1104": { + "node_id": "node_1104", + "content": "MODIFICATION: Increase 2 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n\nPerformance:\n Mass: 115.32 kg\n Factor of Safety: 0.04\n Max Deflection: 9.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.32494145991375, + "fos_buckling": 0.03798138438362346, + "fos_yielding": 0.863540138413115, + "deflection": 0.009461458614182211, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.269)" + }, + "parent_node_id": "node_1103", + "improvement_over_parent": null + }, + "node_1105": { + "node_id": "node_1105", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 131.18 kg\n Factor of Safety: 0.04\n Max Deflection: 8.32e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.18139562106091, + "fos_buckling": 0.04261951699688749, + "fos_yielding": 0.9822965467875641, + "deflection": 0.008322977435780237, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.147)" + }, + "parent_node_id": "node_1104", + "improvement_over_parent": null + }, + "node_1106": { + "node_id": "node_1106", + "content": "MODIFICATION: Increase 2 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 131.67 kg\n Factor of Safety: 0.05\n Max Deflection: 7.96e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.66841131010924, + "fos_buckling": 0.0502272754528892, + "fos_yielding": 1.18524275808407, + "deflection": 0.007962268215458217, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.222)" + }, + "parent_node_id": "node_1105", + "improvement_over_parent": null + }, + "node_1107": { + "node_id": "node_1107", + "content": "MODIFICATION: Increase 9 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 143.77 kg\n Factor of Safety: 0.05\n Max Deflection: 7.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.7711679851758, + "fos_buckling": 0.050162721982518414, + "fos_yielding": 1.1837194516220675, + "deflection": 0.007610990895954841, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.590)" + }, + "parent_node_id": "node_1106", + "improvement_over_parent": null + }, + "node_1108": { + "node_id": "node_1108", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.65 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.651894459117, + "fos_buckling": 0.060350501373905734, + "fos_yielding": 1.4753901786710373, + "deflection": 0.00610319867185176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.274)" + }, + "parent_node_id": "node_1107", + "improvement_over_parent": null + }, + "node_1109": { + "node_id": "node_1109", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2629487018777, + "fos_buckling": 1.5675622686293764, + "fos_yielding": 4.152028570681854, + "deflection": 0.0014504766043499893, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1108", + "improvement_over_parent": null + }, + "node_1110": { + "node_id": "node_1110", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1109", + "improvement_over_parent": null + }, + "node_1111": { + "node_id": "node_1111", + "content": "INITIAL DESIGN (Trace 160)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 148.07 kg\n Factor of Safety: 1.07\n Max Deflection: 2.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.06838373366227, + "fos_buckling": 1.067246224537517, + "fos_yielding": 2.897954495978001, + "deflection": 0.0022294527315480876, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1112": { + "node_id": "node_1112", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 178.43 kg\n Factor of Safety: 1.25\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.42837331095515, + "fos_buckling": 1.2520737158764812, + "fos_yielding": 3.4907812238100493, + "deflection": 0.0018583392465904708, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.221)" + }, + "parent_node_id": "node_1111", + "improvement_over_parent": null + }, + "node_1113": { + "node_id": "node_1113", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.50 kg\n Factor of Safety: 1.46\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.49759139843812, + "fos_buckling": 1.4568654012355688, + "fos_yielding": 4.194485006984582, + "deflection": 0.0015539833214487048, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.222)" + }, + "parent_node_id": "node_1112", + "improvement_over_parent": null + }, + "node_1114": { + "node_id": "node_1114", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 218.05 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.05199873413613, + "fos_buckling": 1.3237531524816042, + "fos_yielding": 4.136988390689493, + "deflection": 0.0014968538101718203, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1113", + "improvement_over_parent": null + }, + "node_1115": { + "node_id": "node_1115", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2263416108648, + "fos_buckling": 1.5678261910119777, + "fos_yielding": 4.1507277640215685, + "deflection": 0.0014506505640511337, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1114", + "improvement_over_parent": null + }, + "node_1116": { + "node_id": "node_1116", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1115", + "improvement_over_parent": null + }, + "node_1117": { + "node_id": "node_1117", + "content": "INITIAL DESIGN (Trace 161)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1118": { + "node_id": "node_1118", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 157.00 kg\n Factor of Safety: 0.12\n Max Deflection: 6.06e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.99981019770618, + "fos_buckling": 0.1178997710433059, + "fos_yielding": 1.6691813317030428, + "deflection": 0.006060047541474968, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002299)" + }, + "parent_node_id": "node_1117", + "improvement_over_parent": null + }, + "node_1119": { + "node_id": "node_1119", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n\nPerformance:\n Mass: 160.22 kg\n Factor of Safety: 0.12\n Max Deflection: 6.05e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.21596389664256, + "fos_buckling": 0.11785954823922608, + "fos_yielding": 1.668611872126619, + "deflection": 0.006046825644802491, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001765)" + }, + "parent_node_id": "node_1118", + "improvement_over_parent": null + }, + "node_1120": { + "node_id": "node_1120", + "content": "MODIFICATION: Increase 9 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0025)]\n\nPerformance:\n Mass: 161.41 kg\n Factor of Safety: 0.12\n Max Deflection: 6.05e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.41192742643537, + "fos_buckling": 0.11784459792909582, + "fos_yielding": 1.668400211167893, + "deflection": 0.006046430469059603, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.420)" + }, + "parent_node_id": "node_1119", + "improvement_over_parent": null + }, + "node_1121": { + "node_id": "node_1121", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 199.99 kg\n Factor of Safety: 1.43\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.99380145889302, + "fos_buckling": 1.4300080430105115, + "fos_yielding": 3.7520625042791087, + "deflection": 0.0016059226375812036, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005115)" + }, + "parent_node_id": "node_1120", + "improvement_over_parent": null + }, + "node_1122": { + "node_id": "node_1122", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.11 kg\n Factor of Safety: 1.55\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.10858484559958, + "fos_buckling": 1.552239231736659, + "fos_yielding": 4.146530544642088, + "deflection": 0.0014545159923930212, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.116)" + }, + "parent_node_id": "node_1121", + "improvement_over_parent": null + }, + "node_1123": { + "node_id": "node_1123", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1122", + "improvement_over_parent": null + }, + "node_1124": { + "node_id": "node_1124", + "content": "INITIAL DESIGN (Trace 162)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 110.42 kg\n Factor of Safety: 0.63\n Max Deflection: 2.78e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.41704787031341, + "fos_buckling": 0.6343352605012832, + "fos_yielding": 2.2251240214045955, + "deflection": 0.002782865434858942, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1125": { + "node_id": "node_1125", + "content": "MODIFICATION: Increase 3 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 111.30 kg\n Factor of Safety: 0.63\n Max Deflection: 2.78e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.3007180149099, + "fos_buckling": 0.6341521494129492, + "fos_yielding": 2.2251170590405027, + "deflection": 0.0027831170880212868, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.490)" + }, + "parent_node_id": "node_1124", + "improvement_over_parent": null + }, + "node_1126": { + "node_id": "node_1126", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 118.02 kg\n Factor of Safety: 0.86\n Max Deflection: 2.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 118.02201983445586, + "fos_buckling": 0.8594359236753014, + "fos_yielding": 2.23258268592502, + "deflection": 0.0027068741251745345, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001588)" + }, + "parent_node_id": "node_1125", + "improvement_over_parent": null + }, + "node_1127": { + "node_id": "node_1127", + "content": "MODIFICATION: Increase 5 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 118.89 kg\n Factor of Safety: 0.81\n Max Deflection: 2.70e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 118.88690460745794, + "fos_buckling": 0.8080124451152392, + "fos_yielding": 2.230318887710274, + "deflection": 0.002695022400970657, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.372)" + }, + "parent_node_id": "node_1126", + "improvement_over_parent": null + }, + "node_1128": { + "node_id": "node_1128", + "content": "MODIFICATION: Increase 2 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 119.57 kg\n Factor of Safety: 0.92\n Max Deflection: 2.69e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.57087426693589, + "fos_buckling": 0.9159610652965273, + "fos_yielding": 2.2274611824648662, + "deflection": 0.002690528683751268, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.587)" + }, + "parent_node_id": "node_1127", + "improvement_over_parent": null + }, + "node_1129": { + "node_id": "node_1129", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 151.69 kg\n Factor of Safety: 1.13\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.69351460592134, + "fos_buckling": 1.131961731987988, + "fos_yielding": 2.824244756420238, + "deflection": 0.002125097714662867, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.285)" + }, + "parent_node_id": "node_1128", + "improvement_over_parent": null + }, + "node_1130": { + "node_id": "node_1130", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 182.00 kg\n Factor of Safety: 1.32\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.00494424230882, + "fos_buckling": 1.3242354351256254, + "fos_yielding": 3.3867510624862884, + "deflection": 0.0017745743279969056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_1129", + "improvement_over_parent": null + }, + "node_1131": { + "node_id": "node_1131", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.11 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.11465770651066, + "fos_buckling": 1.5672035015518706, + "fos_yielding": 4.148674570709904, + "deflection": 0.0014513575139870893, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_1130", + "improvement_over_parent": null + }, + "node_1132": { + "node_id": "node_1132", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1131", + "improvement_over_parent": null + }, + "node_1133": { + "node_id": "node_1133", + "content": "INITIAL DESIGN (Trace 163)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 148.61 kg\n Factor of Safety: 0.85\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.61277072649844, + "fos_buckling": 0.8514073001410353, + "fos_yielding": 2.795547610338076, + "deflection": 0.0021573989728607378, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1134": { + "node_id": "node_1134", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 173.29 kg\n Factor of Safety: 0.98\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.28764418850136, + "fos_buckling": 0.9756156299048926, + "fos_yielding": 3.2581714351778475, + "deflection": 0.0018531626815349873, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.178)" + }, + "parent_node_id": "node_1133", + "improvement_over_parent": null + }, + "node_1135": { + "node_id": "node_1135", + "content": "MODIFICATION: Increase 2 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 173.99 kg\n Factor of Safety: 1.23\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.99305367022677, + "fos_buckling": 1.2276199379170745, + "fos_yielding": 3.2538266410366496, + "deflection": 0.0018499592032921578, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.538)" + }, + "parent_node_id": "node_1134", + "improvement_over_parent": null + }, + "node_1136": { + "node_id": "node_1136", + "content": "MODIFICATION: Increase 2 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 174.69 kg\n Factor of Safety: 1.28\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.69087660527367, + "fos_buckling": 1.2788585433311026, + "fos_yielding": 3.251086590074409, + "deflection": 0.001848023033316787, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.359)" + }, + "parent_node_id": "node_1135", + "improvement_over_parent": null + }, + "node_1137": { + "node_id": "node_1137", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22939628560025, + "fos_buckling": 1.5678476206468719, + "fos_yielding": 4.150812915418823, + "deflection": 0.0014506240432984176, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.305)" + }, + "parent_node_id": "node_1136", + "improvement_over_parent": null + }, + "node_1138": { + "node_id": "node_1138", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1137", + "improvement_over_parent": null + }, + "node_1139": { + "node_id": "node_1139", + "content": "INITIAL DESIGN (Trace 164)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1140": { + "node_id": "node_1140", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 202.10 kg\n Factor of Safety: 1.46\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.0981256305228, + "fos_buckling": 1.4589535102226745, + "fos_yielding": 4.19645566016795, + "deflection": 0.0015438926523031553, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1139", + "improvement_over_parent": null + }, + "node_1141": { + "node_id": "node_1141", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 214.65 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.64648325061904, + "fos_buckling": 1.5232382311914219, + "fos_yielding": 4.19645566016795, + "deflection": 0.0014701569371880438, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1140", + "improvement_over_parent": null + }, + "node_1142": { + "node_id": "node_1142", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2595878653797, + "fos_buckling": 1.5680110398324938, + "fos_yielding": 4.151339310951526, + "deflection": 0.0014504370044323108, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1141", + "improvement_over_parent": null + }, + "node_1143": { + "node_id": "node_1143", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1142", + "improvement_over_parent": null + }, + "node_1144": { + "node_id": "node_1144", + "content": "INITIAL DESIGN (Trace 165)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1145": { + "node_id": "node_1145", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 155.70 kg\n Factor of Safety: 1.00\n Max Deflection: 1.07e+11 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.70066456238663, + "fos_buckling": 0.998474242181765, + "fos_yielding": 2.441695187236619, + "deflection": 107089134183.13388, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001608)" + }, + "parent_node_id": "node_1144", + "improvement_over_parent": null + }, + "node_1146": { + "node_id": "node_1146", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 160.81 kg\n Factor of Safety: 1.00\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.80876535913148, + "fos_buckling": 0.998474242181765, + "fos_yielding": 2.441695187236619, + "deflection": 0.0020006449567020364, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002095)" + }, + "parent_node_id": "node_1145", + "improvement_over_parent": null + }, + "node_1147": { + "node_id": "node_1147", + "content": "MODIFICATION: Increase 1 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 165.16 kg\n Factor of Safety: 1.00\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.15694439404479, + "fos_buckling": 0.998474242181765, + "fos_yielding": 2.441695187236619, + "deflection": 0.001857864199068141, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.458)" + }, + "parent_node_id": "node_1146", + "improvement_over_parent": null + }, + "node_1148": { + "node_id": "node_1148", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 169.45 kg\n Factor of Safety: 1.00\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.4522707323378, + "fos_buckling": 0.998474242181765, + "fos_yielding": 2.441695187236619, + "deflection": 0.001766718589236308, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001940)" + }, + "parent_node_id": "node_1147", + "improvement_over_parent": null + }, + "node_1149": { + "node_id": "node_1149", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 176.60 kg\n Factor of Safety: 1.00\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.6011665748238, + "fos_buckling": 0.9999690169054037, + "fos_yielding": 2.445350548681634, + "deflection": 0.0017724194292288882, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002094)" + }, + "parent_node_id": "node_1148", + "improvement_over_parent": null + }, + "node_1150": { + "node_id": "node_1150", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 212.92 kg\n Factor of Safety: 1.19\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.9185698267488, + "fos_buckling": 1.1855756815338734, + "fos_yielding": 2.9602693702544562, + "deflection": 0.0014740690077382976, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.225)" + }, + "parent_node_id": "node_1149", + "improvement_over_parent": null + }, + "node_1151": { + "node_id": "node_1151", + "content": "MODIFICATION: Increase 4 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0084)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 230.32 kg\n Factor of Safety: 1.19\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 230.31653645029533, + "fos_buckling": 1.1947076805178143, + "fos_yielding": 2.9830711005045067, + "deflection": 0.0014437635756977664, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.460)" + }, + "parent_node_id": "node_1150", + "improvement_over_parent": null + }, + "node_1152": { + "node_id": "node_1152", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1151", + "improvement_over_parent": null + }, + "node_1153": { + "node_id": "node_1153", + "content": "INITIAL DESIGN (Trace 166)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0017)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 100.09 kg\n Factor of Safety: 0.04\n Max Deflection: 1.02e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 100.08771638889883, + "fos_buckling": 0.039697120888238346, + "fos_yielding": 0.9069308859066266, + "deflection": 0.010190723430153837, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1154": { + "node_id": "node_1154", + "content": "MODIFICATION: Increase 5 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0017)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 103.08 kg\n Factor of Safety: 0.04\n Max Deflection: 1.02e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.07702491610581, + "fos_buckling": 0.039697120888238346, + "fos_yielding": 0.9069308859066266, + "deflection": 0.010190723430153837, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.202)" + }, + "parent_node_id": "node_1153", + "improvement_over_parent": null + }, + "node_1155": { + "node_id": "node_1155", + "content": "MODIFICATION: Increase 1 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 106.59 kg\n Factor of Safety: 0.04\n Max Deflection: 9.97e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.5891356902583, + "fos_buckling": 0.03968227450843142, + "fos_yielding": 0.9065917016008249, + "deflection": 0.009967871223187747, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.513)" + }, + "parent_node_id": "node_1154", + "improvement_over_parent": null + }, + "node_1156": { + "node_id": "node_1156", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 121.73 kg\n Factor of Safety: 0.04\n Max Deflection: 8.74e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.7280456495291, + "fos_buckling": 0.04460828438662949, + "fos_yielding": 1.0342546317655508, + "deflection": 0.008735461690369782, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_1155", + "improvement_over_parent": null + }, + "node_1157": { + "node_id": "node_1157", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 146.00 kg\n Factor of Safety: 0.05\n Max Deflection: 7.29e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.995897396156, + "fos_buckling": 0.05214001766544568, + "fos_yielding": 1.2383344264897758, + "deflection": 0.007293133793364646, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_1156", + "improvement_over_parent": null + }, + "node_1158": { + "node_id": "node_1158", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 150.32 kg\n Factor of Safety: 0.05\n Max Deflection: 7.28e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.32404120163068, + "fos_buckling": 0.05211606436428997, + "fos_yielding": 1.2377655314495108, + "deflection": 0.007281094168456701, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001956)" + }, + "parent_node_id": "node_1157", + "improvement_over_parent": null + }, + "node_1159": { + "node_id": "node_1159", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n\nPerformance:\n Mass: 186.81 kg\n Factor of Safety: 1.35\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.80521826319227, + "fos_buckling": 1.3536160430311828, + "fos_yielding": 3.4760132666814862, + "deflection": 0.001729399508396155, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004752)" + }, + "parent_node_id": "node_1158", + "improvement_over_parent": null + }, + "node_1160": { + "node_id": "node_1160", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3727633980124, + "fos_buckling": 1.5686099264685058, + "fos_yielding": 4.153731975158831, + "deflection": 0.0014496234360065318, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_1159", + "improvement_over_parent": null + }, + "node_1161": { + "node_id": "node_1161", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1160", + "improvement_over_parent": null + }, + "node_1162": { + "node_id": "node_1162", + "content": "INITIAL DESIGN (Trace 167)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 173.06 kg\n Factor of Safety: 1.17\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.06286391408042, + "fos_buckling": 1.1703466885016394, + "fos_yielding": 3.4580040372781915, + "deflection": 0.0018702091249861576, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1163": { + "node_id": "node_1163", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 183.54 kg\n Factor of Safety: 1.28\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.54104518021364, + "fos_buckling": 1.2803487132627236, + "fos_yielding": 3.4713113301399585, + "deflection": 0.0017975498755594226, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002544)" + }, + "parent_node_id": "node_1162", + "improvement_over_parent": null + }, + "node_1164": { + "node_id": "node_1164", + "content": "MODIFICATION: Increase 1 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 186.42 kg\n Factor of Safety: 1.35\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.42178993904164, + "fos_buckling": 1.351396319676909, + "fos_yielding": 3.468804440646491, + "deflection": 0.0017330776144843213, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.264)" + }, + "parent_node_id": "node_1163", + "improvement_over_parent": null + }, + "node_1165": { + "node_id": "node_1165", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25642444887117, + "fos_buckling": 1.5680905084777566, + "fos_yielding": 4.151462290201758, + "deflection": 0.0014505019721732274, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.217)" + }, + "parent_node_id": "node_1164", + "improvement_over_parent": null + }, + "node_1166": { + "node_id": "node_1166", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1165", + "improvement_over_parent": null + }, + "node_1167": { + "node_id": "node_1167", + "content": "INITIAL DESIGN (Trace 168)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 159.29 kg\n Factor of Safety: 1.18\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.29218380001555, + "fos_buckling": 1.181205126441573, + "fos_yielding": 2.9653155149561896, + "deflection": 0.0020247047659606226, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1168": { + "node_id": "node_1168", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 176.50 kg\n Factor of Safety: 1.29\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.50390744109936, + "fos_buckling": 1.2901626056316127, + "fos_yielding": 3.284711139504593, + "deflection": 0.0018292535268856279, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.116)" + }, + "parent_node_id": "node_1167", + "improvement_over_parent": null + }, + "node_1169": { + "node_id": "node_1169", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 198.95 kg\n Factor of Safety: 1.43\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.94842687556852, + "fos_buckling": 1.426842007979087, + "fos_yielding": 3.700916039309904, + "deflection": 0.0016251839182508609, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.138)" + }, + "parent_node_id": "node_1168", + "improvement_over_parent": null + }, + "node_1170": { + "node_id": "node_1170", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21033692556443, + "fos_buckling": 1.5677357923748283, + "fos_yielding": 4.150446962632346, + "deflection": 0.0014507491590572711, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_1169", + "improvement_over_parent": null + }, + "node_1171": { + "node_id": "node_1171", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1170", + "improvement_over_parent": null + }, + "node_1172": { + "node_id": "node_1172", + "content": "INITIAL DESIGN (Trace 169)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 166.69 kg\n Factor of Safety: 0.70\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.68625745990846, + "fos_buckling": 0.7025695692937165, + "fos_yielding": 3.4472269401822593, + "deflection": 0.0021059503633983627, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1173": { + "node_id": "node_1173", + "content": "MODIFICATION: Increase 8 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 168.06 kg\n Factor of Safety: 0.64\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.05622462956657, + "fos_buckling": 0.6438125811339852, + "fos_yielding": 3.440094960055786, + "deflection": 0.002099178909183457, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.252)" + }, + "parent_node_id": "node_1172", + "improvement_over_parent": null + }, + "node_1174": { + "node_id": "node_1174", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 200.29 kg\n Factor of Safety: 0.75\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.29204596984027, + "fos_buckling": 0.7457248372186608, + "fos_yielding": 4.092955337953417, + "deflection": 0.0017614816137285223, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_1173", + "improvement_over_parent": null + }, + "node_1175": { + "node_id": "node_1175", + "content": "MODIFICATION: Increase 5 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 201.73 kg\n Factor of Safety: 0.68\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.73185365170627, + "fos_buckling": 0.683185485241482, + "fos_yielding": 4.084100554887085, + "deflection": 0.0017457317525688889, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.479)" + }, + "parent_node_id": "node_1174", + "improvement_over_parent": null + }, + "node_1176": { + "node_id": "node_1176", + "content": "MODIFICATION: Increase 0 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 205.48 kg\n Factor of Safety: 0.78\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.47752640524607, + "fos_buckling": 0.7829343976281207, + "fos_yielding": 4.097567685826081, + "deflection": 0.0016885863239881895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.290)" + }, + "parent_node_id": "node_1175", + "improvement_over_parent": null + }, + "node_1177": { + "node_id": "node_1177", + "content": "MODIFICATION: Increase 5 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 206.97 kg\n Factor of Safety: 0.74\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.97396111001984, + "fos_buckling": 0.7367262921264839, + "fos_yielding": 4.091771630809558, + "deflection": 0.0016789422143097827, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.353)" + }, + "parent_node_id": "node_1176", + "improvement_over_parent": null + }, + "node_1178": { + "node_id": "node_1178", + "content": "MODIFICATION: Increase 7 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.15 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.15392306168445, + "fos_buckling": 1.5674185308090265, + "fos_yielding": 4.149438136777734, + "deflection": 0.0014511496186542393, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.647)" + }, + "parent_node_id": "node_1177", + "improvement_over_parent": null + }, + "node_1179": { + "node_id": "node_1179", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1178", + "improvement_over_parent": null + }, + "node_1180": { + "node_id": "node_1180", + "content": "INITIAL DESIGN (Trace 170)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 144.76 kg\n Factor of Safety: 1.03\n Max Deflection: 7.02e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.75537059847733, + "fos_buckling": 1.0251429968490404, + "fos_yielding": 2.7599075601028873, + "deflection": 7017932412081.532, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1181": { + "node_id": "node_1181", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 170.98 kg\n Factor of Safety: 0.07\n Max Deflection: 9.17e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.98079075238797, + "fos_buckling": 0.0736147064061907, + "fos_yielding": 1.1025534460480149, + "deflection": 9167892834864.158, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_1180", + "improvement_over_parent": null + }, + "node_1182": { + "node_id": "node_1182", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 176.16 kg\n Factor of Safety: 0.25\n Max Deflection: 8.59e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.15513362911665, + "fos_buckling": 0.25056785629111367, + "fos_yielding": 1.7351423321739947, + "deflection": 8593684772967.977, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1181", + "improvement_over_parent": null + }, + "node_1183": { + "node_id": "node_1183", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 219.77 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.76618787187735, + "fos_buckling": 1.5224517308179937, + "fos_yielding": 4.196572081128729, + "deflection": 0.0014702601680555436, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1182", + "improvement_over_parent": null + }, + "node_1184": { + "node_id": "node_1184", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32059520757537, + "fos_buckling": 1.5684389207933145, + "fos_yielding": 4.152764463812089, + "deflection": 0.001450062937309781, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1183", + "improvement_over_parent": null + }, + "node_1185": { + "node_id": "node_1185", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1184", + "improvement_over_parent": null + }, + "node_1186": { + "node_id": "node_1186", + "content": "INITIAL DESIGN (Trace 171)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 129.00 kg\n Factor of Safety: 0.08\n Max Deflection: 1.95e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.99998054619908, + "fos_buckling": 0.0764846151880601, + "fos_yielding": 0.6800862433203844, + "deflection": 19471828586590.742, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1187": { + "node_id": "node_1187", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 131.79 kg\n Factor of Safety: 0.09\n Max Deflection: 1.23e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.78699868012654, + "fos_buckling": 0.09189482477094753, + "fos_yielding": 2.1625358968577, + "deflection": 12323382538500.338, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001512)" + }, + "parent_node_id": "node_1186", + "improvement_over_parent": null + }, + "node_1188": { + "node_id": "node_1188", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 165.23 kg\n Factor of Safety: 1.11\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.22931264514085, + "fos_buckling": 1.1097574317867855, + "fos_yielding": 3.2479007538404447, + "deflection": 0.0019015979079620349, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004383)" + }, + "parent_node_id": "node_1187", + "improvement_over_parent": null + }, + "node_1189": { + "node_id": "node_1189", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.69 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.68654586600974, + "fos_buckling": 1.3389461643235923, + "fos_yielding": 4.137866860701778, + "deflection": 0.00149601107710703, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.302)" + }, + "parent_node_id": "node_1188", + "improvement_over_parent": null + }, + "node_1190": { + "node_id": "node_1190", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.234903486106, + "fos_buckling": 1.5678395495667667, + "fos_yielding": 4.150969744709697, + "deflection": 0.001450600032790831, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1189", + "improvement_over_parent": null + }, + "node_1191": { + "node_id": "node_1191", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1190", + "improvement_over_parent": null + }, + "node_1192": { + "node_id": "node_1192", + "content": "INITIAL DESIGN (Trace 172)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 113.29 kg\n Factor of Safety: 0.62\n Max Deflection: 2.74e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.29490898078582, + "fos_buckling": 0.6213493242097187, + "fos_yielding": 2.2594947548858753, + "deflection": 0.00273761279671847, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1193": { + "node_id": "node_1193", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 120.12 kg\n Factor of Safety: 0.81\n Max Deflection: 2.66e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.12126306634472, + "fos_buckling": 0.8073275798259048, + "fos_yielding": 2.265415180633293, + "deflection": 0.002658358573761362, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001614)" + }, + "parent_node_id": "node_1192", + "improvement_over_parent": null + }, + "node_1194": { + "node_id": "node_1194", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 139.58 kg\n Factor of Safety: 0.92\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.57858377943296, + "fos_buckling": 0.9227640679384047, + "fos_yielding": 2.631292486004829, + "deflection": 0.0022907211307922524, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_1193", + "improvement_over_parent": null + }, + "node_1195": { + "node_id": "node_1195", + "content": "MODIFICATION: Increase 3 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 140.36 kg\n Factor of Safety: 0.94\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.36098792228276, + "fos_buckling": 0.9428603091119473, + "fos_yielding": 2.631788254959717, + "deflection": 0.002285990028428765, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.332)" + }, + "parent_node_id": "node_1194", + "improvement_over_parent": null + }, + "node_1196": { + "node_id": "node_1196", + "content": "MODIFICATION: Increase 2 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 141.15 kg\n Factor of Safety: 1.06\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.14906382411235, + "fos_buckling": 1.062451375749485, + "fos_yielding": 2.628477344667349, + "deflection": 0.002282301891956841, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.570)" + }, + "parent_node_id": "node_1195", + "improvement_over_parent": null + }, + "node_1197": { + "node_id": "node_1197", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 179.25 kg\n Factor of Safety: 1.31\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.25137290097666, + "fos_buckling": 1.3072308437272455, + "fos_yielding": 3.335744779481823, + "deflection": 0.0018014999072410224, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.290)" + }, + "parent_node_id": "node_1196", + "improvement_over_parent": null + }, + "node_1198": { + "node_id": "node_1198", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.17133193592807, + "fos_buckling": 1.5675240880059198, + "fos_yielding": 4.149806760606763, + "deflection": 0.0014509769731416227, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.269)" + }, + "parent_node_id": "node_1197", + "improvement_over_parent": null + }, + "node_1199": { + "node_id": "node_1199", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1198", + "improvement_over_parent": null + }, + "node_1200": { + "node_id": "node_1200", + "content": "INITIAL DESIGN (Trace 173)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 147.56 kg\n Factor of Safety: 1.14\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.55523395703503, + "fos_buckling": 1.1378676063734694, + "fos_yielding": 2.963024138452833, + "deflection": 0.0020878919785750423, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1201": { + "node_id": "node_1201", + "content": "MODIFICATION: Increase 5 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 148.55 kg\n Factor of Safety: 1.14\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.55450919467705, + "fos_buckling": 1.1376263811721214, + "fos_yielding": 2.963024138452833, + "deflection": 0.0020851099571173766, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.318)" + }, + "parent_node_id": "node_1200", + "improvement_over_parent": null + }, + "node_1202": { + "node_id": "node_1202", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 174.78 kg\n Factor of Safety: 1.31\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.77503711759095, + "fos_buckling": 1.3070662765805565, + "fos_yielding": 3.4843297800385136, + "deflection": 0.0017757220400508873, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.190)" + }, + "parent_node_id": "node_1201", + "improvement_over_parent": null + }, + "node_1203": { + "node_id": "node_1203", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 181.92 kg\n Factor of Safety: 1.33\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.92393296007694, + "fos_buckling": 1.3316489843406163, + "fos_yielding": 3.447849893771368, + "deflection": 0.0017514976116481185, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002094)" + }, + "parent_node_id": "node_1202", + "improvement_over_parent": null + }, + "node_1204": { + "node_id": "node_1204", + "content": "MODIFICATION: Increase 9 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0066)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 195.46 kg\n Factor of Safety: 1.20\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.46411300419626, + "fos_buckling": 1.196331723755372, + "fos_yielding": 3.443657091655751, + "deflection": 0.0016177447481740782, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.427)" + }, + "parent_node_id": "node_1203", + "improvement_over_parent": null + }, + "node_1205": { + "node_id": "node_1205", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0081)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 235.10 kg\n Factor of Safety: 1.39\n Max Deflection: 1.35e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 235.10081778088357, + "fos_buckling": 1.3893812609150602, + "fos_yielding": 4.146489083190607, + "deflection": 0.0013485241681946475, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.225)" + }, + "parent_node_id": "node_1204", + "improvement_over_parent": null + }, + "node_1206": { + "node_id": "node_1206", + "content": "MODIFICATION: Increase 2 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0081)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 235.59 kg\n Factor of Safety: 1.51\n Max Deflection: 1.35e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 235.59150481420144, + "fos_buckling": 1.5103052209073735, + "fos_yielding": 4.144409869531687, + "deflection": 0.0013475739799305559, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.176)" + }, + "parent_node_id": "node_1205", + "improvement_over_parent": null + }, + "node_1207": { + "node_id": "node_1207", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1206", + "improvement_over_parent": null + }, + "node_1208": { + "node_id": "node_1208", + "content": "INITIAL DESIGN (Trace 174)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 108.17 kg\n Factor of Safety: 0.83\n Max Deflection: 2.94e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.17151914685138, + "fos_buckling": 0.8341777089822974, + "fos_yielding": 2.0925793996894577, + "deflection": 0.002940128652508224, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1209": { + "node_id": "node_1209", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 124.56 kg\n Factor of Safety: 0.95\n Max Deflection: 2.56e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.55660845087323, + "fos_buckling": 0.9472919097510482, + "fos_yielding": 2.4088862281718, + "deflection": 0.0025563612310742865, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.159)" + }, + "parent_node_id": "node_1208", + "improvement_over_parent": null + }, + "node_1210": { + "node_id": "node_1210", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 155.34 kg\n Factor of Safety: 1.15\n Max Deflection: 2.05e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.34363150124713, + "fos_buckling": 1.1505252112002817, + "fos_yielding": 3.0027305478909168, + "deflection": 0.0020542491843312653, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.263)" + }, + "parent_node_id": "node_1209", + "improvement_over_parent": null + }, + "node_1211": { + "node_id": "node_1211", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n\nPerformance:\n Mass: 157.89 kg\n Factor of Safety: 1.18\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.8868577958153, + "fos_buckling": 1.17601045968271, + "fos_yielding": 2.971642884445994, + "deflection": 0.002025272069439357, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001371)" + }, + "parent_node_id": "node_1210", + "improvement_over_parent": null + }, + "node_1212": { + "node_id": "node_1212", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 183.97 kg\n Factor of Safety: 1.34\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.97278670296816, + "fos_buckling": 1.3402995019789772, + "fos_yielding": 3.4606169346149684, + "deflection": 0.0017411338315389687, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.178)" + }, + "parent_node_id": "node_1211", + "improvement_over_parent": null + }, + "node_1213": { + "node_id": "node_1213", + "content": "MODIFICATION: Increase 9 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0059)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 192.55 kg\n Factor of Safety: 1.35\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.54864380120793, + "fos_buckling": 1.3540969676670722, + "fos_yielding": 3.4574258459976526, + "deflection": 0.0016490509842678812, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.266)" + }, + "parent_node_id": "node_1212", + "improvement_over_parent": null + }, + "node_1214": { + "node_id": "node_1214", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0072)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 230.90 kg\n Factor of Safety: 1.58\n Max Deflection: 1.38e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 230.9033428943717, + "fos_buckling": 1.575031746043395, + "fos_yielding": 4.147318041982826, + "deflection": 0.0013788076364203657, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_1213", + "improvement_over_parent": null + }, + "node_1215": { + "node_id": "node_1215", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1214", + "improvement_over_parent": null + }, + "node_1216": { + "node_id": "node_1216", + "content": "INITIAL DESIGN (Trace 175)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 115.69 kg\n Factor of Safety: 0.04\n Max Deflection: 9.19e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.68865333944584, + "fos_buckling": 0.04266331001847354, + "fos_yielding": 0.983336569538892, + "deflection": 0.009188872594839501, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1217": { + "node_id": "node_1217", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n\nPerformance:\n Mass: 144.60 kg\n Factor of Safety: 0.96\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.60102112132907, + "fos_buckling": 0.9599031996477471, + "fos_yielding": 2.747338825174956, + "deflection": 0.002245739183582761, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003706)" + }, + "parent_node_id": "node_1216", + "improvement_over_parent": null + }, + "node_1218": { + "node_id": "node_1218", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 148.03 kg\n Factor of Safety: 1.11\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.0323610384993, + "fos_buckling": 1.1079898165546, + "fos_yielding": 2.7562992439102993, + "deflection": 0.002177184589315598, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001526)" + }, + "parent_node_id": "node_1217", + "improvement_over_parent": null + }, + "node_1219": { + "node_id": "node_1219", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 173.99 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.99312729579935, + "fos_buckling": 1.2745112829800225, + "fos_yielding": 3.2381743635096205, + "deflection": 0.001855376629242479, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.188)" + }, + "parent_node_id": "node_1218", + "improvement_over_parent": null + }, + "node_1220": { + "node_id": "node_1220", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2887870251023, + "fos_buckling": 1.5682012090882975, + "fos_yielding": 4.151954272115429, + "deflection": 0.0014502621796351435, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_1219", + "improvement_over_parent": null + }, + "node_1221": { + "node_id": "node_1221", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1220", + "improvement_over_parent": null + }, + "node_1222": { + "node_id": "node_1222", + "content": "INITIAL DESIGN (Trace 176)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 141.56 kg\n Factor of Safety: 0.70\n Max Deflection: 2.36e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.56193223891157, + "fos_buckling": 0.7020513593142996, + "fos_yielding": 2.74935510525534, + "deflection": 0.002363137278601526, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1223": { + "node_id": "node_1223", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 183.09 kg\n Factor of Safety: 0.87\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.08667615110096, + "fos_buckling": 0.8745335241776911, + "fos_yielding": 3.5508636984026167, + "deflection": 0.0018302827569497333, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.316)" + }, + "parent_node_id": "node_1222", + "improvement_over_parent": null + }, + "node_1224": { + "node_id": "node_1224", + "content": "MODIFICATION: Increase 7 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 192.37 kg\n Factor of Safety: 1.39\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.37409471134373, + "fos_buckling": 1.3875363232343025, + "fos_yielding": 3.5793244157489688, + "deflection": 0.0016800962652392683, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.355)" + }, + "parent_node_id": "node_1223", + "improvement_over_parent": null + }, + "node_1225": { + "node_id": "node_1225", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1962699703734, + "fos_buckling": 1.5677607294938163, + "fos_yielding": 4.150513041150639, + "deflection": 0.0014508974532301713, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_1224", + "improvement_over_parent": null + }, + "node_1226": { + "node_id": "node_1226", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1225", + "improvement_over_parent": null + }, + "node_1227": { + "node_id": "node_1227", + "content": "INITIAL DESIGN (Trace 177)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0022)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 123.57 kg\n Factor of Safety: 0.50\n Max Deflection: 2.68e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.56612352041353, + "fos_buckling": 0.49702558396827645, + "fos_yielding": 2.425256678824278, + "deflection": 0.002676571549043169, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1228": { + "node_id": "node_1228", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 153.64 kg\n Factor of Safety: 0.60\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.64351802728245, + "fos_buckling": 0.602206673590715, + "fos_yielding": 3.018152121768397, + "deflection": 0.002155436942971832, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.259)" + }, + "parent_node_id": "node_1227", + "improvement_over_parent": null + }, + "node_1229": { + "node_id": "node_1229", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 198.72 kg\n Factor of Safety: 0.75\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.71603886850863, + "fos_buckling": 0.7488873322639663, + "fos_yielding": 3.9091025745483448, + "deflection": 0.0016697500348981217, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_1228", + "improvement_over_parent": null + }, + "node_1230": { + "node_id": "node_1230", + "content": "MODIFICATION: Increase 7 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.53 kg\n Factor of Safety: 1.33\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.5329812233976, + "fos_buckling": 1.3333078132924645, + "fos_yielding": 3.8977433783981454, + "deflection": 0.0014714147975140868, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.565)" + }, + "parent_node_id": "node_1229", + "improvement_over_parent": null + }, + "node_1231": { + "node_id": "node_1231", + "content": "MODIFICATION: Increase 9 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.14 kg\n Factor of Safety: 1.33\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.1422554812733, + "fos_buckling": 1.3295378338789865, + "fos_yielding": 3.8867223582337953, + "deflection": 0.0014677378244437992, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.443)" + }, + "parent_node_id": "node_1230", + "improvement_over_parent": null + }, + "node_1232": { + "node_id": "node_1232", + "content": "MODIFICATION: Increase 6 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.16681087936928, + "fos_buckling": 1.5676054928903576, + "fos_yielding": 4.149843914860848, + "deflection": 0.0014511386477807358, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.271)" + }, + "parent_node_id": "node_1231", + "improvement_over_parent": null + }, + "node_1233": { + "node_id": "node_1233", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1232", + "improvement_over_parent": null + }, + "node_1234": { + "node_id": "node_1234", + "content": "INITIAL DESIGN (Trace 178)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 175.65 kg\n Factor of Safety: 1.32\n Max Deflection: 2.05e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.65345560869065, + "fos_buckling": 1.3180763323612101, + "fos_yielding": 3.2687534468358046, + "deflection": 0.002054809134044104, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1235": { + "node_id": "node_1235", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.66 kg\n Factor of Safety: 1.52\n Max Deflection: 1.72e-03 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 209.6575860299689, + "fos_buckling": 1.5240377213488028, + "fos_yielding": 3.92145893210505, + "deflection": 0.0017219148836705397, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.212)" + }, + "parent_node_id": "node_1234", + "improvement_over_parent": null + }, + "node_1236": { + "node_id": "node_1236", + "content": "MODIFICATION: Increase 0 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.80 kg\n Factor of Safety: 1.52\n Max Deflection: 1.56e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 213.80470934625475, + "fos_buckling": 1.523370557043246, + "fos_yielding": 4.194274012738444, + "deflection": 0.001561587022948964, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.468)" + }, + "parent_node_id": "node_1235", + "improvement_over_parent": null + }, + "node_1237": { + "node_id": "node_1237", + "content": "MODIFICATION: Increase 0 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.12 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 218.12341479663462, + "fos_buckling": 1.5226764102186734, + "fos_yielding": 4.194274012738442, + "deflection": 0.0014735805527099884, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.348)" + }, + "parent_node_id": "node_1236", + "improvement_over_parent": null + }, + "node_1238": { + "node_id": "node_1238", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 221.68 kg\n Factor of Safety: 1.52\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.67782213233264, + "fos_buckling": 1.51789084990975, + "fos_yielding": 4.155147888991549, + "deflection": 0.001456828995374619, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1237", + "improvement_over_parent": null + }, + "node_1239": { + "node_id": "node_1239", + "content": "MODIFICATION: Increase 5 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0078)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 231.43 kg\n Factor of Safety: 1.23\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 231.43223547562917, + "fos_buckling": 1.2337510030813237, + "fos_yielding": 4.161117021242906, + "deflection": 0.0014417108532296795, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.366)" + }, + "parent_node_id": "node_1238", + "improvement_over_parent": null + }, + "node_1240": { + "node_id": "node_1240", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1239", + "improvement_over_parent": null + }, + "node_1241": { + "node_id": "node_1241", + "content": "INITIAL DESIGN (Trace 179)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 175.22 kg\n Factor of Safety: 1.04\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.2195592076848, + "fos_buckling": 1.0351174591222878, + "fos_yielding": 3.4091585474919643, + "deflection": 0.0018183752869138216, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1242": { + "node_id": "node_1242", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.65 kg\n Factor of Safety: 1.24\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.6461574480552, + "fos_buckling": 1.2382367387509146, + "fos_yielding": 4.19255703038093, + "deflection": 0.0014816435872705156, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.253)" + }, + "parent_node_id": "node_1241", + "improvement_over_parent": null + }, + "node_1243": { + "node_id": "node_1243", + "content": "MODIFICATION: Increase 2 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.73 kg\n Factor of Safety: 1.50\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.73289520216946, + "fos_buckling": 1.496450077769209, + "fos_yielding": 4.1925570303809305, + "deflection": 0.0014774568769478544, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.389)" + }, + "parent_node_id": "node_1242", + "improvement_over_parent": null + }, + "node_1244": { + "node_id": "node_1244", + "content": "MODIFICATION: Increase 4 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.49 kg\n Factor of Safety: 1.41\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.48585529291515, + "fos_buckling": 1.4085594994417494, + "fos_yielding": 4.19255703038093, + "deflection": 0.0014746541341913283, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.437)" + }, + "parent_node_id": "node_1243", + "improvement_over_parent": null + }, + "node_1245": { + "node_id": "node_1245", + "content": "MODIFICATION: Increase 2 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.57 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.57196894691018, + "fos_buckling": 1.5216795719014087, + "fos_yielding": 4.192557030380929, + "deflection": 0.0014715081000111429, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.292)" + }, + "parent_node_id": "node_1244", + "improvement_over_parent": null + }, + "node_1246": { + "node_id": "node_1246", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.13 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1263762826082, + "fos_buckling": 1.5672445357101015, + "fos_yielding": 4.148804306999081, + "deflection": 0.0014512995881668786, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1245", + "improvement_over_parent": null + }, + "node_1247": { + "node_id": "node_1247", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1246", + "improvement_over_parent": null + }, + "node_1248": { + "node_id": "node_1248", + "content": "INITIAL DESIGN (Trace 180)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 121.67 kg\n Factor of Safety: 0.77\n Max Deflection: 2.59e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.66651579260379, + "fos_buckling": 0.7694068203578802, + "fos_yielding": 1.837160980968645, + "deflection": 0.0025933273722547247, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1249": { + "node_id": "node_1249", + "content": "MODIFICATION: Increase 7 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 122.90 kg\n Factor of Safety: 0.77\n Max Deflection: 2.59e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 122.8979385579942, + "fos_buckling": 0.7693465529404382, + "fos_yielding": 1.8370170766714404, + "deflection": 0.0025935837479750304, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.332)" + }, + "parent_node_id": "node_1248", + "improvement_over_parent": null + }, + "node_1250": { + "node_id": "node_1250", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 125.02 kg\n Factor of Safety: 0.77\n Max Deflection: 2.58e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.01679944653651, + "fos_buckling": 0.7660578928070277, + "fos_yielding": 1.8291645363547862, + "deflection": 0.0025781880022410332, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001130)" + }, + "parent_node_id": "node_1249", + "improvement_over_parent": null + }, + "node_1251": { + "node_id": "node_1251", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 139.10 kg\n Factor of Safety: 0.85\n Max Deflection: 2.32e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.10088592887345, + "fos_buckling": 0.8463577051073553, + "fos_yielding": 2.0375623551011723, + "deflection": 0.0023190523577680303, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_1250", + "improvement_over_parent": null + }, + "node_1252": { + "node_id": "node_1252", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 181.10 kg\n Factor of Safety: 1.08\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.09791483094298, + "fos_buckling": 1.0784987106659079, + "fos_yielding": 2.6622985283201333, + "deflection": 0.0017856112283442178, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.325)" + }, + "parent_node_id": "node_1251", + "improvement_over_parent": null + }, + "node_1253": { + "node_id": "node_1253", + "content": "MODIFICATION: Increase 4 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0030)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 182.91 kg\n Factor of Safety: 1.08\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.90651690184612, + "fos_buckling": 1.0775812157713145, + "fos_yielding": 2.660033671363458, + "deflection": 0.001780095134779064, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.381)" + }, + "parent_node_id": "node_1252", + "improvement_over_parent": null + }, + "node_1254": { + "node_id": "node_1254", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 212.15 kg\n Factor of Safety: 1.23\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.1479889871962, + "fos_buckling": 1.2313459749089195, + "fos_yielding": 3.094284424517622, + "deflection": 0.0015371417217640445, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.175)" + }, + "parent_node_id": "node_1253", + "improvement_over_parent": null + }, + "node_1255": { + "node_id": "node_1255", + "content": "MODIFICATION: Increase 0 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 216.21 kg\n Factor of Safety: 1.24\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.2070162509285, + "fos_buckling": 1.2368417421796958, + "fos_yielding": 3.1080948948592293, + "deflection": 0.0014669156085095614, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.321)" + }, + "parent_node_id": "node_1254", + "improvement_over_parent": null + }, + "node_1256": { + "node_id": "node_1256", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1255", + "improvement_over_parent": null + }, + "node_1257": { + "node_id": "node_1257", + "content": "INITIAL DESIGN (Trace 181)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.72 kg\n Factor of Safety: 1.47\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.72304510954194, + "fos_buckling": 1.4732847377912734, + "fos_yielding": 4.19645566016795, + "deflection": 0.001597866931606459, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1258": { + "node_id": "node_1258", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 213.34 kg\n Factor of Safety: 1.50\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.3361497243026, + "fos_buckling": 1.4983669213609732, + "fos_yielding": 4.213996964961653, + "deflection": 0.0015962927471928525, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1257", + "improvement_over_parent": null + }, + "node_1259": { + "node_id": "node_1259", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.49 kg\n Factor of Safety: 1.45\n Max Deflection: 1.51e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.48996446260043, + "fos_buckling": 1.4481931223562274, + "fos_yielding": 4.154716594841516, + "deflection": 0.0015105466042940807, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1258", + "improvement_over_parent": null + }, + "node_1260": { + "node_id": "node_1260", + "content": "MODIFICATION: Increase 1 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25462818111205, + "fos_buckling": 1.568043579593053, + "fos_yielding": 4.151343231816255, + "deflection": 0.0014505034954687495, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.300)" + }, + "parent_node_id": "node_1259", + "improvement_over_parent": null + }, + "node_1261": { + "node_id": "node_1261", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1260", + "improvement_over_parent": null + }, + "node_1262": { + "node_id": "node_1262", + "content": "INITIAL DESIGN (Trace 182)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1263": { + "node_id": "node_1263", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 130.80 kg\n Factor of Safety: 0.07\n Max Deflection: 2.06e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.80033662174435, + "fos_buckling": 0.07361935371469458, + "fos_yielding": 0.8423901516097635, + "deflection": 20644691153782.773, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1262", + "improvement_over_parent": null + }, + "node_1264": { + "node_id": "node_1264", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 135.97 kg\n Factor of Safety: 0.05\n Max Deflection: 1.17e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.97467949847302, + "fos_buckling": 0.04540887556158033, + "fos_yielding": 1.0553320271380366, + "deflection": 0.011711753909450465, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1263", + "improvement_over_parent": null + }, + "node_1265": { + "node_id": "node_1265", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 178.63 kg\n Factor of Safety: 0.05\n Max Deflection: 6.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.62664784984642, + "fos_buckling": 0.04520370486889786, + "fos_yielding": 1.0505637257797642, + "deflection": 0.00667077749314527, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1264", + "improvement_over_parent": null + }, + "node_1266": { + "node_id": "node_1266", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 222.24 kg\n Factor of Safety: 1.45\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.23770209260712, + "fos_buckling": 1.4516722452563615, + "fos_yielding": 4.155646474364814, + "deflection": 0.0014522171414350698, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1265", + "improvement_over_parent": null + }, + "node_1267": { + "node_id": "node_1267", + "content": "MODIFICATION: Increase 2 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26389314260274, + "fos_buckling": 1.568084491466033, + "fos_yielding": 4.151343939549269, + "deflection": 0.0014503989936754075, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.445)" + }, + "parent_node_id": "node_1266", + "improvement_over_parent": null + }, + "node_1268": { + "node_id": "node_1268", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1267", + "improvement_over_parent": null + }, + "node_1269": { + "node_id": "node_1269", + "content": "INITIAL DESIGN (Trace 183)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 140.04 kg\n Factor of Safety: 0.78\n Max Deflection: 2.56e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.04430544429624, + "fos_buckling": 0.7833383231909783, + "fos_yielding": 3.0841053639390985, + "deflection": 0.00255824185137362, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1270": { + "node_id": "node_1270", + "content": "MODIFICATION: Increase 0 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 144.15 kg\n Factor of Safety: 0.78\n Max Deflection: 2.39e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.15114781415244, + "fos_buckling": 0.782996682687593, + "fos_yielding": 3.0833024171888996, + "deflection": 0.0023899651069919257, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.481)" + }, + "parent_node_id": "node_1269", + "improvement_over_parent": null + }, + "node_1271": { + "node_id": "node_1271", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 171.71 kg\n Factor of Safety: 0.92\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.70605502849222, + "fos_buckling": 0.9198182328575487, + "fos_yielding": 3.6664463437351436, + "deflection": 0.00200656011482012, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.206)" + }, + "parent_node_id": "node_1270", + "improvement_over_parent": null + }, + "node_1272": { + "node_id": "node_1272", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 196.08 kg\n Factor of Safety: 1.04\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.07736552941859, + "fos_buckling": 1.0373816592409995, + "fos_yielding": 4.180409140623088, + "deflection": 0.0017571798981525681, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_1271", + "improvement_over_parent": null + }, + "node_1273": { + "node_id": "node_1273", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 201.25 kg\n Factor of Safety: 1.08\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.25170840614726, + "fos_buckling": 1.0835749585674288, + "fos_yielding": 4.235098129293452, + "deflection": 0.0017470640867328906, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1272", + "improvement_over_parent": null + }, + "node_1274": { + "node_id": "node_1274", + "content": "MODIFICATION: Increase 9 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0037)]\n\nPerformance:\n Mass: 203.65 kg\n Factor of Safety: 1.08\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.64624972626908, + "fos_buckling": 1.0849688492452054, + "fos_yielding": 4.237002330534968, + "deflection": 0.0017471307763237474, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.538)" + }, + "parent_node_id": "node_1273", + "improvement_over_parent": null + }, + "node_1275": { + "node_id": "node_1275", + "content": "MODIFICATION: Increase 7 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0040)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0037)]\n\nPerformance:\n Mass: 206.88 kg\n Factor of Safety: 1.09\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.8802909284151, + "fos_buckling": 1.08708374283644, + "fos_yielding": 4.238952772795753, + "deflection": 0.001746653326364886, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.292)" + }, + "parent_node_id": "node_1274", + "improvement_over_parent": null + }, + "node_1276": { + "node_id": "node_1276", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0040)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0037)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 213.03 kg\n Factor of Safety: 1.10\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.03410566671292, + "fos_buckling": 1.1027832543601976, + "fos_yielding": 4.168683976480446, + "deflection": 0.0016115799297421456, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1275", + "improvement_over_parent": null + }, + "node_1277": { + "node_id": "node_1277", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1276", + "improvement_over_parent": null + }, + "node_1278": { + "node_id": "node_1278", + "content": "INITIAL DESIGN (Trace 184)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 191.18 kg\n Factor of Safety: 1.34\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.17980374641985, + "fos_buckling": 1.3445939445640533, + "fos_yielding": 3.761077032864372, + "deflection": 0.0017823875727242533, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1279": { + "node_id": "node_1279", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.14 kg\n Factor of Safety: 1.47\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.13630832591207, + "fos_buckling": 1.470203675696538, + "fos_yielding": 4.1905323008396715, + "deflection": 0.0015997962161369218, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_1278", + "improvement_over_parent": null + }, + "node_1280": { + "node_id": "node_1280", + "content": "MODIFICATION: Increase 0 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.11 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.10522881793366, + "fos_buckling": 1.48453135282108, + "fos_yielding": 4.202085026282352, + "deflection": 0.0015205763721412857, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.312)" + }, + "parent_node_id": "node_1279", + "improvement_over_parent": null + }, + "node_1281": { + "node_id": "node_1281", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2590435562315, + "fos_buckling": 1.568046651514075, + "fos_yielding": 4.151450973653745, + "deflection": 0.0014504898974005238, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1280", + "improvement_over_parent": null + }, + "node_1282": { + "node_id": "node_1282", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1281", + "improvement_over_parent": null + }, + "node_1283": { + "node_id": "node_1283", + "content": "INITIAL DESIGN (Trace 185)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 193.27 kg\n Factor of Safety: 1.10\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.27313517455892, + "fos_buckling": 1.100433041575949, + "fos_yielding": 4.195107600608034, + "deflection": 0.0017682186174016899, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1284": { + "node_id": "node_1284", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 196.83 kg\n Factor of Safety: 0.74\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.82754251025693, + "fos_buckling": 0.7413622082641934, + "fos_yielding": 4.094230676976667, + "deflection": 0.0016707331744797648, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1283", + "improvement_over_parent": null + }, + "node_1285": { + "node_id": "node_1285", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 209.38 kg\n Factor of Safety: 0.83\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.3759001303532, + "fos_buckling": 0.8340251514097965, + "fos_yielding": 4.105097471563399, + "deflection": 0.0016323881481160908, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1284", + "improvement_over_parent": null + }, + "node_1286": { + "node_id": "node_1286", + "content": "MODIFICATION: Increase 7 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0039)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 213.19 kg\n Factor of Safety: 0.72\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.1864621428247, + "fos_buckling": 0.7234814567115802, + "fos_yielding": 4.090855451755192, + "deflection": 0.0016238028550041622, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.513)" + }, + "parent_node_id": "node_1285", + "improvement_over_parent": null + }, + "node_1287": { + "node_id": "node_1287", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1286", + "improvement_over_parent": null + }, + "node_1288": { + "node_id": "node_1288", + "content": "INITIAL DESIGN (Trace 186)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n\nPerformance:\n Mass: 101.40 kg\n Factor of Safety: 0.07\n Max Deflection: 2.38e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 101.40456337233996, + "fos_buckling": 0.0688783486923024, + "fos_yielding": 1.08126794842885, + "deflection": 23781561216893.9, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1289": { + "node_id": "node_1289", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 131.55 kg\n Factor of Safety: 0.62\n Max Deflection: 1.25e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.54850828259598, + "fos_buckling": 0.6222710289899107, + "fos_yielding": 2.0046290694664397, + "deflection": 12518785488161.904, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_1288", + "improvement_over_parent": null + }, + "node_1290": { + "node_id": "node_1290", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 165.94 kg\n Factor of Safety: 0.26\n Max Deflection: 6.76e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.93666765424666, + "fos_buckling": 0.25744689253233316, + "fos_yielding": 2.929165577516764, + "deflection": 6763609975234.921, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_1289", + "improvement_over_parent": null + }, + "node_1291": { + "node_id": "node_1291", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 208.59 kg\n Factor of Safety: 1.47\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.58863600562006, + "fos_buckling": 1.4739547724408413, + "fos_yielding": 4.1988253729347695, + "deflection": 0.001520026709614646, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1290", + "improvement_over_parent": null + }, + "node_1292": { + "node_id": "node_1292", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.20 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.20174062038072, + "fos_buckling": 1.4846316490405749, + "fos_yielding": 4.2043720052389535, + "deflection": 0.0015199041311915451, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1291", + "improvement_over_parent": null + }, + "node_1293": { + "node_id": "node_1293", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.35555535867854, + "fos_buckling": 1.5681678279955167, + "fos_yielding": 4.153711803034863, + "deflection": 0.0014498420720512532, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1292", + "improvement_over_parent": null + }, + "node_1294": { + "node_id": "node_1294", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1293", + "improvement_over_parent": null + }, + "node_1295": { + "node_id": "node_1295", + "content": "INITIAL DESIGN (Trace 187)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 114.68 kg\n Factor of Safety: 0.03\n Max Deflection: 1.00e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.67642263224522, + "fos_buckling": 0.034127229646884985, + "fos_yielding": 0.7676106775198737, + "deflection": 0.01000799967880454, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1296": { + "node_id": "node_1296", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 143.61 kg\n Factor of Safety: 0.04\n Max Deflection: 8.00e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.61140980872787, + "fos_buckling": 0.04184084562920489, + "fos_yielding": 0.9622790465028344, + "deflection": 0.007998414710954816, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.271)" + }, + "parent_node_id": "node_1295", + "improvement_over_parent": null + }, + "node_1297": { + "node_id": "node_1297", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 178.58 kg\n Factor of Safety: 1.31\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.5796066879498, + "fos_buckling": 1.3071474749560887, + "fos_yielding": 3.335659912458049, + "deflection": 0.001804283859072999, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004540)" + }, + "parent_node_id": "node_1296", + "improvement_over_parent": null + }, + "node_1298": { + "node_id": "node_1298", + "content": "MODIFICATION: Increase 2 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 179.12 kg\n Factor of Safety: 1.31\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.12177027409336, + "fos_buckling": 1.3065442423027622, + "fos_yielding": 3.333629464560097, + "deflection": 0.001802931120113627, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.252)" + }, + "parent_node_id": "node_1297", + "improvement_over_parent": null + }, + "node_1299": { + "node_id": "node_1299", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33305238844258, + "fos_buckling": 1.568569678898228, + "fos_yielding": 4.153153281483316, + "deflection": 0.0014500528492518766, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.271)" + }, + "parent_node_id": "node_1298", + "improvement_over_parent": null + }, + "node_1300": { + "node_id": "node_1300", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1299", + "improvement_over_parent": null + }, + "node_1301": { + "node_id": "node_1301", + "content": "INITIAL DESIGN (Trace 188)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 119.86 kg\n Factor of Safety: 0.01\n Max Deflection: 1.87e+14 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.86052562109226, + "fos_buckling": 0.005819171959468502, + "fos_yielding": 0.13515849355360626, + "deflection": 187384400166731.44, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1302": { + "node_id": "node_1302", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 124.22 kg\n Factor of Safety: 0.09\n Max Deflection: 1.06e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.21813255621609, + "fos_buckling": 0.08794824884823997, + "fos_yielding": 1.7894190211293795, + "deflection": 10628197914130.668, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001767)" + }, + "parent_node_id": "node_1301", + "improvement_over_parent": null + }, + "node_1303": { + "node_id": "node_1303", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 157.41 kg\n Factor of Safety: 1.38\n Max Deflection: 4.11e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.41260910051452, + "fos_buckling": 1.3823374027422686, + "fos_yielding": 3.579040338157414, + "deflection": 4106630434665.921, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.290)" + }, + "parent_node_id": "node_1302", + "improvement_over_parent": null + }, + "node_1304": { + "node_id": "node_1304", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 175.46 kg\n Factor of Safety: 0.35\n Max Deflection: 3.40e+12 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.4613434473828, + "fos_buckling": 0.35379151899094763, + "fos_yielding": 4.193053182358797, + "deflection": 3396006287404.713, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_1303", + "improvement_over_parent": null + }, + "node_1305": { + "node_id": "node_1305", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.11 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.1133117987562, + "fos_buckling": 1.3240370290079189, + "fos_yielding": 4.138206353459508, + "deflection": 0.001496467684167772, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1304", + "improvement_over_parent": null + }, + "node_1306": { + "node_id": "node_1306", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28765467548487, + "fos_buckling": 1.5681102798431719, + "fos_yielding": 4.151949587913212, + "deflection": 0.0014502660784481885, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1305", + "improvement_over_parent": null + }, + "node_1307": { + "node_id": "node_1307", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1306", + "improvement_over_parent": null + }, + "node_1308": { + "node_id": "node_1308", + "content": "INITIAL DESIGN (Trace 189)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0024)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 94.08 kg\n Factor of Safety: 0.08\n Max Deflection: 9.07e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 94.08445416820093, + "fos_buckling": 0.08128893158807268, + "fos_yielding": 1.271184878099052, + "deflection": 0.00907071263037907, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1309": { + "node_id": "node_1309", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 118.66 kg\n Factor of Safety: 0.10\n Max Deflection: 7.20e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 118.66395904740398, + "fos_buckling": 0.09956372041632303, + "fos_yielding": 1.5979294161594693, + "deflection": 0.00720196411573745, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.277)" + }, + "parent_node_id": "node_1308", + "improvement_over_parent": null + }, + "node_1310": { + "node_id": "node_1310", + "content": "MODIFICATION: Increase 9 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 120.04 kg\n Factor of Safety: 0.10\n Max Deflection: 6.82e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.03838295396898, + "fos_buckling": 0.09954917883062855, + "fos_yielding": 1.5976960336839887, + "deflection": 0.006817631341853407, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.185)" + }, + "parent_node_id": "node_1309", + "improvement_over_parent": null + }, + "node_1311": { + "node_id": "node_1311", + "content": "MODIFICATION: Increase 4 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 127.63 kg\n Factor of Safety: 0.10\n Max Deflection: 6.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.63497797531808, + "fos_buckling": 0.09954917883062853, + "fos_yielding": 1.5976960336839883, + "deflection": 0.006823598456988055, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.441)" + }, + "parent_node_id": "node_1310", + "improvement_over_parent": null + }, + "node_1312": { + "node_id": "node_1312", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 159.26 kg\n Factor of Safety: 0.94\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.26408673462598, + "fos_buckling": 0.9359855636596907, + "fos_yielding": 2.6150208189604394, + "deflection": 0.0019839199300929573, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004129)" + }, + "parent_node_id": "node_1311", + "improvement_over_parent": null + }, + "node_1313": { + "node_id": "node_1313", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 195.12 kg\n Factor of Safety: 1.13\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.1206189176873, + "fos_buckling": 1.126739599397018, + "fos_yielding": 3.213985814602624, + "deflection": 0.0016234121631295488, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.244)" + }, + "parent_node_id": "node_1312", + "improvement_over_parent": null + }, + "node_1314": { + "node_id": "node_1314", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.07 kg\n Factor of Safety: 1.23\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.06673800177788, + "fos_buckling": 1.2296257533112571, + "fos_yielding": 3.54920016063453, + "deflection": 0.0014749139163589696, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.112)" + }, + "parent_node_id": "node_1313", + "improvement_over_parent": null + }, + "node_1315": { + "node_id": "node_1315", + "content": "MODIFICATION: Increase 6 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31120319423684, + "fos_buckling": 1.5686358244783076, + "fos_yielding": 4.153174678296479, + "deflection": 0.0014500216153679427, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.408)" + }, + "parent_node_id": "node_1314", + "improvement_over_parent": null + }, + "node_1316": { + "node_id": "node_1316", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1315", + "improvement_over_parent": null + }, + "node_1317": { + "node_id": "node_1317", + "content": "INITIAL DESIGN (Trace 190)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 125.60 kg\n Factor of Safety: 0.54\n Max Deflection: 1.77e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.60212651201815, + "fos_buckling": 0.5426659957018353, + "fos_yielding": 0.8247863701597623, + "deflection": 17704822467784.863, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1318": { + "node_id": "node_1318", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 155.62 kg\n Factor of Safety: 0.00\n Max Deflection: 5.21e+14 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.6192037514801, + "fos_buckling": 0.004697688249412226, + "fos_yielding": 0.05930268046233893, + "deflection": 521248630235027.7, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.259)" + }, + "parent_node_id": "node_1317", + "improvement_over_parent": null + }, + "node_1319": { + "node_id": "node_1319", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 158.76 kg\n Factor of Safety: 0.05\n Max Deflection: 6.90e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.76317383874198, + "fos_buckling": 0.05458781065630172, + "fos_yielding": 1.3073849120300995, + "deflection": 0.006896673989540397, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001722)" + }, + "parent_node_id": "node_1318", + "improvement_over_parent": null + }, + "node_1320": { + "node_id": "node_1320", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 179.57 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.57129943503747, + "fos_buckling": 0.06038833833280709, + "fos_yielding": 1.476538198100295, + "deflection": 0.006104663859569853, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_1319", + "improvement_over_parent": null + }, + "node_1321": { + "node_id": "node_1321", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.18235367779818, + "fos_buckling": 1.5674449993601804, + "fos_yielding": 4.149512313370292, + "deflection": 0.001450877915280336, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1320", + "improvement_over_parent": null + }, + "node_1322": { + "node_id": "node_1322", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1321", + "improvement_over_parent": null + }, + "node_1323": { + "node_id": "node_1323", + "content": "INITIAL DESIGN (Trace 191)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 140.38 kg\n Factor of Safety: 1.05\n Max Deflection: 2.26e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.38204507976894, + "fos_buckling": 1.0508821543759068, + "fos_yielding": 2.84542693449482, + "deflection": 0.002263942750284183, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1324": { + "node_id": "node_1324", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 156.66 kg\n Factor of Safety: 1.16\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.6558009422344, + "fos_buckling": 1.1555805852163712, + "fos_yielding": 3.1745903450693462, + "deflection": 0.0020331779432799266, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.124)" + }, + "parent_node_id": "node_1323", + "improvement_over_parent": null + }, + "node_1325": { + "node_id": "node_1325", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 166.14 kg\n Factor of Safety: 1.21\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.13765102208333, + "fos_buckling": 1.2068846199983272, + "fos_yielding": 3.1745903450693467, + "deflection": 0.0019376489965184608, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002285)" + }, + "parent_node_id": "node_1324", + "improvement_over_parent": null + }, + "node_1326": { + "node_id": "node_1326", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 198.56 kg\n Factor of Safety: 1.40\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.55889196441512, + "fos_buckling": 1.4021201583046026, + "fos_yielding": 3.792546174092437, + "deflection": 0.0016248446628342348, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.212)" + }, + "parent_node_id": "node_1325", + "improvement_over_parent": null + }, + "node_1327": { + "node_id": "node_1327", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n\nPerformance:\n Mass: 201.77 kg\n Factor of Safety: 1.44\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.7716951191479, + "fos_buckling": 1.4436246980801033, + "fos_yielding": 3.7534161235625594, + "deflection": 0.0016026711293356888, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001763)" + }, + "parent_node_id": "node_1326", + "improvement_over_parent": null + }, + "node_1328": { + "node_id": "node_1328", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2531680877617, + "fos_buckling": 1.5680002100962973, + "fos_yielding": 4.151425955493194, + "deflection": 0.0014504231281499162, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.117)" + }, + "parent_node_id": "node_1327", + "improvement_over_parent": null + }, + "node_1329": { + "node_id": "node_1329", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1328", + "improvement_over_parent": null + }, + "node_1330": { + "node_id": "node_1330", + "content": "INITIAL DESIGN (Trace 192)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 134.03 kg\n Factor of Safety: 0.89\n Max Deflection: 2.49e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.02793708137426, + "fos_buckling": 0.8865006787314207, + "fos_yielding": 2.557993838538908, + "deflection": 0.00249437021889988, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1331": { + "node_id": "node_1331", + "content": "MODIFICATION: Increase 1 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 137.20 kg\n Factor of Safety: 1.04\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.20013006487244, + "fos_buckling": 1.035977697881835, + "fos_yielding": 2.5549452860479853, + "deflection": 0.002347336606886059, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.439)" + }, + "parent_node_id": "node_1330", + "improvement_over_parent": null + }, + "node_1332": { + "node_id": "node_1332", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 173.31 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.31391255335643, + "fos_buckling": 1.270141685277397, + "fos_yielding": 3.2253771439080188, + "deflection": 0.001862464712104726, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.282)" + }, + "parent_node_id": "node_1331", + "improvement_over_parent": null + }, + "node_1333": { + "node_id": "node_1333", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20988577021956, + "fos_buckling": 1.5676174315493911, + "fos_yielding": 4.150247295846884, + "deflection": 0.001450689217289619, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.316)" + }, + "parent_node_id": "node_1332", + "improvement_over_parent": null + }, + "node_1334": { + "node_id": "node_1334", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1333", + "improvement_over_parent": null + }, + "node_1335": { + "node_id": "node_1335", + "content": "INITIAL DESIGN (Trace 193)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 131.92 kg\n Factor of Safety: 0.59\n Max Deflection: 2.57e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.9189014125927, + "fos_buckling": 0.5946590029823642, + "fos_yielding": 2.5828297476421787, + "deflection": 0.0025655309534518187, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1336": { + "node_id": "node_1336", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 171.19 kg\n Factor of Safety: 0.75\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.18737750277538, + "fos_buckling": 0.7459712054330883, + "fos_yielding": 3.3470488078143137, + "deflection": 0.0019797054980247738, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_1335", + "improvement_over_parent": null + }, + "node_1337": { + "node_id": "node_1337", + "content": "MODIFICATION: Increase 7 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 181.71 kg\n Factor of Safety: 1.32\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.71156675784025, + "fos_buckling": 1.3223698971237594, + "fos_yielding": 3.381167083101459, + "deflection": 0.0017773747644753404, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.453)" + }, + "parent_node_id": "node_1336", + "improvement_over_parent": null + }, + "node_1338": { + "node_id": "node_1338", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.09 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.08707067583077, + "fos_buckling": 1.566982883887342, + "fos_yielding": 4.147992239126856, + "deflection": 0.0014515089413428613, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.250)" + }, + "parent_node_id": "node_1337", + "improvement_over_parent": null + }, + "node_1339": { + "node_id": "node_1339", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1338", + "improvement_over_parent": null + }, + "node_1340": { + "node_id": "node_1340", + "content": "INITIAL DESIGN (Trace 194)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 137.86 kg\n Factor of Safety: 0.83\n Max Deflection: 2.50e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.86110831353224, + "fos_buckling": 0.8340130185568952, + "fos_yielding": 2.8224148613680358, + "deflection": 0.0024968075802626485, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1341": { + "node_id": "node_1341", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 141.97 kg\n Factor of Safety: 0.88\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.96526591571998, + "fos_buckling": 0.8778684674252116, + "fos_yielding": 2.7768567938414503, + "deflection": 0.0023419176505956488, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001658)" + }, + "parent_node_id": "node_1340", + "improvement_over_parent": null + }, + "node_1342": { + "node_id": "node_1342", + "content": "MODIFICATION: Increase 10 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 143.26 kg\n Factor of Safety: 0.83\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.26168236263467, + "fos_buckling": 0.8347432551965446, + "fos_yielding": 2.773401556474897, + "deflection": 0.002330472652888101, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.342)" + }, + "parent_node_id": "node_1341", + "improvement_over_parent": null + }, + "node_1343": { + "node_id": "node_1343", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0029)]\n\nPerformance:\n Mass: 181.71 kg\n Factor of Safety: 1.02\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.7057502771917, + "fos_buckling": 1.024781561154038, + "fos_yielding": 3.5136722473724187, + "deflection": 0.0018404828978066706, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.289)" + }, + "parent_node_id": "node_1342", + "improvement_over_parent": null + }, + "node_1344": { + "node_id": "node_1344", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n\nPerformance:\n Mass: 215.21 kg\n Factor of Safety: 1.18\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.20632264650024, + "fos_buckling": 1.1792048917529783, + "fos_yielding": 4.157286526342296, + "deflection": 0.0015561766543355734, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_1343", + "improvement_over_parent": null + }, + "node_1345": { + "node_id": "node_1345", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1344", + "improvement_over_parent": null + }, + "node_1346": { + "node_id": "node_1346", + "content": "INITIAL DESIGN (Trace 195)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 148.71 kg\n Factor of Safety: 1.03\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.70520795135982, + "fos_buckling": 1.0308366502401771, + "fos_yielding": 2.528326899461751, + "deflection": 0.002143909959877786, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1347": { + "node_id": "node_1347", + "content": "MODIFICATION: Increase 3 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 149.70 kg\n Factor of Safety: 1.03\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.70315422052383, + "fos_buckling": 1.0311891218535998, + "fos_yielding": 2.5291914044842545, + "deflection": 0.002144110808839916, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.399)" + }, + "parent_node_id": "node_1346", + "improvement_over_parent": null + }, + "node_1348": { + "node_id": "node_1348", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 177.79 kg\n Factor of Safety: 1.20\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.78673809733118, + "fos_buckling": 1.2026689490452394, + "fos_yielding": 3.0072518744392127, + "deflection": 0.0018083746728291147, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_1347", + "improvement_over_parent": null + }, + "node_1349": { + "node_id": "node_1349", + "content": "MODIFICATION: Increase 4 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 182.23 kg\n Factor of Safety: 1.28\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.23019272895044, + "fos_buckling": 1.2840496990961547, + "fos_yielding": 3.529794196517637, + "deflection": 0.0018085953946917863, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.192)" + }, + "parent_node_id": "node_1348", + "improvement_over_parent": null + }, + "node_1350": { + "node_id": "node_1350", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 187.39 kg\n Factor of Safety: 1.36\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.39474593529553, + "fos_buckling": 1.3572296446486731, + "fos_yielding": 3.4869480677405336, + "deflection": 0.0017241428642466238, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002120)" + }, + "parent_node_id": "node_1349", + "improvement_over_parent": null + }, + "node_1351": { + "node_id": "node_1351", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.39 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.39398740629565, + "fos_buckling": 1.5687565518763964, + "fos_yielding": 4.154126979780214, + "deflection": 0.0014495863636765122, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.211)" + }, + "parent_node_id": "node_1350", + "improvement_over_parent": null + }, + "node_1352": { + "node_id": "node_1352", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1351", + "improvement_over_parent": null + }, + "node_1353": { + "node_id": "node_1353", + "content": "INITIAL DESIGN (Trace 196)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 158.69 kg\n Factor of Safety: 1.14\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.6936608668056, + "fos_buckling": 1.1406272042479189, + "fos_yielding": 3.075200798285988, + "deflection": 0.0020745355489193832, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1354": { + "node_id": "node_1354", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 163.19 kg\n Factor of Safety: 1.21\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.1922252732728, + "fos_buckling": 1.2062081420028996, + "fos_yielding": 3.0376853444710257, + "deflection": 0.0019768098606301942, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001828)" + }, + "parent_node_id": "node_1353", + "improvement_over_parent": null + }, + "node_1355": { + "node_id": "node_1355", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 196.33 kg\n Factor of Safety: 1.41\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.33039960562277, + "fos_buckling": 1.4112116346351493, + "fos_yielding": 3.6523616080633143, + "deflection": 0.0016465881982852379, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_1354", + "improvement_over_parent": null + }, + "node_1356": { + "node_id": "node_1356", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31222036127164, + "fos_buckling": 1.5683105364224152, + "fos_yielding": 4.152307265012759, + "deflection": 0.0014501005672900265, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_1355", + "improvement_over_parent": null + }, + "node_1357": { + "node_id": "node_1357", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1356", + "improvement_over_parent": null + }, + "node_1358": { + "node_id": "node_1358", + "content": "INITIAL DESIGN (Trace 197)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 116.46 kg\n Factor of Safety: 0.88\n Max Deflection: 2.83e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.46291626762795, + "fos_buckling": 0.8848015069888299, + "fos_yielding": 2.3388413112930393, + "deflection": 0.0028258318262671983, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1359": { + "node_id": "node_1359", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 131.25 kg\n Factor of Safety: 0.98\n Max Deflection: 2.51e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.25374195387346, + "fos_buckling": 0.9842320253322736, + "fos_yielding": 2.6344570690351503, + "deflection": 0.0025086765278417114, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_1358", + "improvement_over_parent": null + }, + "node_1360": { + "node_id": "node_1360", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 146.57 kg\n Factor of Safety: 1.08\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.56767529574302, + "fos_buckling": 1.0841414885592284, + "fos_yielding": 2.9401855373761463, + "deflection": 0.0022477400268231533, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.124)" + }, + "parent_node_id": "node_1359", + "improvement_over_parent": null + }, + "node_1361": { + "node_id": "node_1361", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 170.96 kg\n Factor of Safety: 1.24\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.96389587751472, + "fos_buckling": 1.2369488330630523, + "fos_yielding": 3.4265085684672654, + "deflection": 0.0019285806574969742, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.179)" + }, + "parent_node_id": "node_1360", + "improvement_over_parent": null + }, + "node_1362": { + "node_id": "node_1362", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 176.01 kg\n Factor of Safety: 1.14\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.00637881500526, + "fos_buckling": 1.1408383485868352, + "fos_yielding": 3.3905442698050168, + "deflection": 0.0018979941991417257, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002066)" + }, + "parent_node_id": "node_1361", + "improvement_over_parent": null + }, + "node_1363": { + "node_id": "node_1363", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 180.25 kg\n Factor of Safety: 1.29\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.24622893096534, + "fos_buckling": 1.2852459509359802, + "fos_yielding": 3.403753663300298, + "deflection": 0.0018253168535349406, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001913)" + }, + "parent_node_id": "node_1362", + "improvement_over_parent": null + }, + "node_1364": { + "node_id": "node_1364", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 220.02 kg\n Factor of Safety: 1.51\n Max Deflection: 1.50e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.0237152449499, + "fos_buckling": 1.5088291142236299, + "fos_yielding": 4.150938293448627, + "deflection": 0.001498479492468959, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.242)" + }, + "parent_node_id": "node_1363", + "improvement_over_parent": null + }, + "node_1365": { + "node_id": "node_1365", + "content": "MODIFICATION: Increase 1 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.11644016179605, + "fos_buckling": 1.567045976837821, + "fos_yielding": 4.148285763525927, + "deflection": 0.0014513046255182497, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.235)" + }, + "parent_node_id": "node_1364", + "improvement_over_parent": null + }, + "node_1366": { + "node_id": "node_1366", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1365", + "improvement_over_parent": null + }, + "node_1367": { + "node_id": "node_1367", + "content": "INITIAL DESIGN (Trace 198)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 201.70 kg\n Factor of Safety: 1.31\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.69987206882269, + "fos_buckling": 1.305355014434627, + "fos_yielding": 3.306612307992302, + "deflection": 0.0015675210668135335, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1368": { + "node_id": "node_1368", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 204.67 kg\n Factor of Safety: 1.32\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.67478166861267, + "fos_buckling": 1.3152667636989428, + "fos_yielding": 3.331719893092678, + "deflection": 0.0015663475635734404, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001622)" + }, + "parent_node_id": "node_1367", + "improvement_over_parent": null + }, + "node_1369": { + "node_id": "node_1369", + "content": "MODIFICATION: Increase 4 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 212.60 kg\n Factor of Safety: 1.32\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.59619737295785, + "fos_buckling": 1.3191829656873015, + "fos_yielding": 3.341640076914012, + "deflection": 0.0015657109838195789, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.295)" + }, + "parent_node_id": "node_1368", + "improvement_over_parent": null + }, + "node_1370": { + "node_id": "node_1370", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 218.75 kg\n Factor of Safety: 1.18\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.75001211125567, + "fos_buckling": 1.1775719871723065, + "fos_yielding": 3.302781273353932, + "deflection": 0.00148776054767542, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1369", + "improvement_over_parent": null + }, + "node_1371": { + "node_id": "node_1371", + "content": "MODIFICATION: Increase 2 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0029)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.74 kg\n Factor of Safety: 1.30\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.73958540346004, + "fos_buckling": 1.3040474637852635, + "fos_yielding": 3.3033001338920007, + "deflection": 0.0014850207048172429, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.215)" + }, + "parent_node_id": "node_1370", + "improvement_over_parent": null + }, + "node_1372": { + "node_id": "node_1372", + "content": "MODIFICATION: Increase 8 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0029)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 231.28 kg\n Factor of Safety: 1.30\n Max Deflection: 1.41e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 231.27743088665574, + "fos_buckling": 1.3028259786415066, + "fos_yielding": 3.3002059734791525, + "deflection": 0.001408154394505933, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.307)" + }, + "parent_node_id": "node_1371", + "improvement_over_parent": null + }, + "node_1373": { + "node_id": "node_1373", + "content": "MODIFICATION: Increase 1 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0029)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0075)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 233.81 kg\n Factor of Safety: 1.30\n Max Deflection: 1.37e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 233.80633968387275, + "fos_buckling": 1.3022294469726046, + "fos_yielding": 3.298694891101802, + "deflection": 0.0013707218334449817, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.185)" + }, + "parent_node_id": "node_1372", + "improvement_over_parent": null + }, + "node_1374": { + "node_id": "node_1374", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1373", + "improvement_over_parent": null + }, + "node_1375": { + "node_id": "node_1375", + "content": "INITIAL DESIGN (Trace 199)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 164.49 kg\n Factor of Safety: 0.12\n Max Deflection: 9.89e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.49206906175436, + "fos_buckling": 0.11799880403047616, + "fos_yielding": 1.08126794842885, + "deflection": 9888644422144.79, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1376": { + "node_id": "node_1376", + "content": "MODIFICATION: Increase 5 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 170.88 kg\n Factor of Safety: 0.12\n Max Deflection: 9.89e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.8849812486603, + "fos_buckling": 0.11799880403047616, + "fos_yielding": 1.08126794842885, + "deflection": 9888644422144.79, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.292)" + }, + "parent_node_id": "node_1375", + "improvement_over_parent": null + }, + "node_1377": { + "node_id": "node_1377", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.50 kg\n Factor of Safety: 1.25\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.496035491421, + "fos_buckling": 1.2460972347381496, + "fos_yielding": 4.195107600608034, + "deflection": 0.0015592350195499666, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1376", + "improvement_over_parent": null + }, + "node_1378": { + "node_id": "node_1378", + "content": "MODIFICATION: Increase 1 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 219.69 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.6948504907578, + "fos_buckling": 1.5224584544487387, + "fos_yielding": 4.195107600608034, + "deflection": 0.0014706528948286476, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.462)" + }, + "parent_node_id": "node_1377", + "improvement_over_parent": null + }, + "node_1379": { + "node_id": "node_1379", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24925782645582, + "fos_buckling": 1.567977074802754, + "fos_yielding": 4.151346475168411, + "deflection": 0.0014504700844574572, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1378", + "improvement_over_parent": null + }, + "node_1380": { + "node_id": "node_1380", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1379", + "improvement_over_parent": null + }, + "node_1381": { + "node_id": "node_1381", + "content": "INITIAL DESIGN (Trace 200)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 160.85 kg\n Factor of Safety: 0.83\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.85405288792305, + "fos_buckling": 0.8298038087469941, + "fos_yielding": 2.829094396055331, + "deflection": 0.0020954570475473235, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1382": { + "node_id": "node_1382", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 182.03 kg\n Factor of Safety: 0.93\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.02504955019234, + "fos_buckling": 0.9300205658114803, + "fos_yielding": 3.210461098399846, + "deflection": 0.0018518642728234734, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.143)" + }, + "parent_node_id": "node_1381", + "improvement_over_parent": null + }, + "node_1383": { + "node_id": "node_1383", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 188.18 kg\n Factor of Safety: 0.93\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.17886428849016, + "fos_buckling": 0.9288106013743397, + "fos_yielding": 3.2104610983998465, + "deflection": 0.0018289016476212947, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1382", + "improvement_over_parent": null + }, + "node_1384": { + "node_id": "node_1384", + "content": "MODIFICATION: Increase 5 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0092)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.25 kg\n Factor of Safety: 0.93\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.25318458327584, + "fos_buckling": 0.9266483412824743, + "fos_yielding": 3.2104610983998465, + "deflection": 0.001696350627802438, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.592)" + }, + "parent_node_id": "node_1383", + "improvement_over_parent": null + }, + "node_1385": { + "node_id": "node_1385", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0092)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 215.43 kg\n Factor of Safety: 1.01\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.4275274600045, + "fos_buckling": 1.013771781119388, + "fos_yielding": 3.099574569252856, + "deflection": 0.0016095710138430844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1384", + "improvement_over_parent": null + }, + "node_1386": { + "node_id": "node_1386", + "content": "MODIFICATION: Increase 9 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0092)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0030)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 216.46 kg\n Factor of Safety: 1.02\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.45948872240018, + "fos_buckling": 1.0154908101288005, + "fos_yielding": 3.0974184949373846, + "deflection": 0.001607010204638473, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.188)" + }, + "parent_node_id": "node_1385", + "improvement_over_parent": null + }, + "node_1387": { + "node_id": "node_1387", + "content": "MODIFICATION: Increase 10 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0092)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0030)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0032)]\n\nPerformance:\n Mass: 218.07 kg\n Factor of Safety: 1.02\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.07009146534645, + "fos_buckling": 1.0201293893246364, + "fos_yielding": 3.0917417749186895, + "deflection": 0.0016028590243236124, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.355)" + }, + "parent_node_id": "node_1386", + "improvement_over_parent": null + }, + "node_1388": { + "node_id": "node_1388", + "content": "MODIFICATION: Increase 10 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0092)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0030)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0042)]\n\nPerformance:\n Mass: 219.73 kg\n Factor of Safety: 1.02\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.72544409806812, + "fos_buckling": 1.0232576166418015, + "fos_yielding": 3.087732466540894, + "deflection": 0.0016001181535251088, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.292)" + }, + "parent_node_id": "node_1387", + "improvement_over_parent": null + }, + "node_1389": { + "node_id": "node_1389", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1388", + "improvement_over_parent": null + }, + "node_1390": { + "node_id": "node_1390", + "content": "INITIAL DESIGN (Trace 201)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 201.51 kg\n Factor of Safety: 1.13\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.50546743073707, + "fos_buckling": 1.1270213232757749, + "fos_yielding": 4.19645566016795, + "deflection": 0.0016143808429110301, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1391": { + "node_id": "node_1391", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.12 kg\n Factor of Safety: 1.18\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.11857204549773, + "fos_buckling": 1.1770523611666126, + "fos_yielding": 4.162826423129433, + "deflection": 0.0016016790412274136, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1390", + "improvement_over_parent": null + }, + "node_1392": { + "node_id": "node_1392", + "content": "MODIFICATION: Increase 10 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0037)]\n\nPerformance:\n Mass: 213.42 kg\n Factor of Safety: 1.17\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.41936351390785, + "fos_buckling": 1.1651436943382434, + "fos_yielding": 4.1575315495480405, + "deflection": 0.0016001110673858115, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.441)" + }, + "parent_node_id": "node_1391", + "improvement_over_parent": null + }, + "node_1393": { + "node_id": "node_1393", + "content": "MODIFICATION: Increase 5 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0037)]\n\nPerformance:\n Mass: 214.34 kg\n Factor of Safety: 1.15\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.3388957196688, + "fos_buckling": 1.145500910371467, + "fos_yielding": 4.1534870927198675, + "deflection": 0.0015945526659931484, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.193)" + }, + "parent_node_id": "node_1392", + "improvement_over_parent": null + }, + "node_1394": { + "node_id": "node_1394", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1393", + "improvement_over_parent": null + }, + "node_1395": { + "node_id": "node_1395", + "content": "INITIAL DESIGN (Trace 202)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 133.99 kg\n Factor of Safety: 0.73\n Max Deflection: 2.30e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 133.98747011896103, + "fos_buckling": 0.7263288971859041, + "fos_yielding": 2.80875485085944, + "deflection": 0.0022986034860327477, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1396": { + "node_id": "node_1396", + "content": "MODIFICATION: Increase 3 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 135.16 kg\n Factor of Safety: 0.73\n Max Deflection: 2.30e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.1576363552698, + "fos_buckling": 0.7261045595599592, + "fos_yielding": 2.808739538098024, + "deflection": 0.0022988753052016657, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.527)" + }, + "parent_node_id": "node_1395", + "improvement_over_parent": null + }, + "node_1397": { + "node_id": "node_1397", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 165.51 kg\n Factor of Safety: 0.86\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.50899415057523, + "fos_buckling": 0.8609194236586674, + "fos_yielding": 3.434845907720949, + "deflection": 0.0018813550465555788, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.241)" + }, + "parent_node_id": "node_1396", + "improvement_over_parent": null + }, + "node_1398": { + "node_id": "node_1398", + "content": "MODIFICATION: Increase 6 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 169.61 kg\n Factor of Safety: 0.86\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.61374019928385, + "fos_buckling": 0.8609194236586674, + "fos_yielding": 3.434845907720949, + "deflection": 0.0018813550465555788, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.208)" + }, + "parent_node_id": "node_1397", + "improvement_over_parent": null + }, + "node_1399": { + "node_id": "node_1399", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 180.07 kg\n Factor of Safety: 1.03\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.0728384184092, + "fos_buckling": 1.0315166279137502, + "fos_yielding": 3.444949050666664, + "deflection": 0.001830793589690712, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002539)" + }, + "parent_node_id": "node_1398", + "improvement_over_parent": null + }, + "node_1400": { + "node_id": "node_1400", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 216.26 kg\n Factor of Safety: 1.19\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.25507283555459, + "fos_buckling": 1.1948526641921702, + "fos_yielding": 4.132626325852895, + "deflection": 0.0015272462066987537, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_1399", + "improvement_over_parent": null + }, + "node_1401": { + "node_id": "node_1401", + "content": "MODIFICATION: Increase 7 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.37277917245214, + "fos_buckling": 1.5684924217450191, + "fos_yielding": 4.152492644673737, + "deflection": 0.001449732314720621, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.214)" + }, + "parent_node_id": "node_1400", + "improvement_over_parent": null + }, + "node_1402": { + "node_id": "node_1402", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1401", + "improvement_over_parent": null + }, + "node_1403": { + "node_id": "node_1403", + "content": "INITIAL DESIGN (Trace 203)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0014)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0020)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0005)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0019)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0019)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0010)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0019)]\n\nPerformance:\n Mass: 76.11 kg\n Factor of Safety: 0.50\n Max Deflection: 4.20e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 76.1060171604338, + "fos_buckling": 0.5026919243063863, + "fos_yielding": 1.435245907054597, + "deflection": 0.0042044474820014, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1404": { + "node_id": "node_1404", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0007)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 97.76 kg\n Factor of Safety: 0.64\n Max Deflection: 3.28e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 97.75503479451939, + "fos_buckling": 0.6435769287430281, + "fos_yielding": 1.8426575007207198, + "deflection": 0.003277611245094937, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_1403", + "improvement_over_parent": null + }, + "node_1405": { + "node_id": "node_1405", + "content": "MODIFICATION: Increase 5 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 98.71 kg\n Factor of Safety: 0.77\n Max Deflection: 3.25e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 98.70676807729666, + "fos_buckling": 0.7688788753788536, + "fos_yielding": 1.8394688559398473, + "deflection": 0.0032549483622393944, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.558)" + }, + "parent_node_id": "node_1404", + "improvement_over_parent": null + }, + "node_1406": { + "node_id": "node_1406", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 112.33 kg\n Factor of Safety: 0.87\n Max Deflection: 2.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.3308203374916, + "fos_buckling": 0.8655240392369136, + "fos_yielding": 2.092852343758203, + "deflection": 0.0028626433351049284, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_1405", + "improvement_over_parent": null + }, + "node_1407": { + "node_id": "node_1407", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 140.63 kg\n Factor of Safety: 1.06\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.6331111674627, + "fos_buckling": 1.0590061814898517, + "fos_yielding": 2.6188307895222698, + "deflection": 0.0022906400655166538, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.266)" + }, + "parent_node_id": "node_1406", + "improvement_over_parent": null + }, + "node_1408": { + "node_id": "node_1408", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 174.48 kg\n Factor of Safety: 1.28\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.47932285313902, + "fos_buckling": 1.2775321642464565, + "fos_yielding": 3.247140701446733, + "deflection": 0.0018502454960214422, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.258)" + }, + "parent_node_id": "node_1407", + "improvement_over_parent": null + }, + "node_1409": { + "node_id": "node_1409", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27628256777408, + "fos_buckling": 1.568108104241089, + "fos_yielding": 4.151654976569932, + "deflection": 0.0014503286937831198, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_1408", + "improvement_over_parent": null + }, + "node_1410": { + "node_id": "node_1410", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1409", + "improvement_over_parent": null + }, + "node_1411": { + "node_id": "node_1411", + "content": "INITIAL DESIGN (Trace 204)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 190.47 kg\n Factor of Safety: 1.25\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.46641355305556, + "fos_buckling": 1.2452852612572323, + "fos_yielding": 3.805755383349787, + "deflection": 0.0017154132746117225, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1412": { + "node_id": "node_1412", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 209.96 kg\n Factor of Safety: 1.35\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.95845199755294, + "fos_buckling": 1.3492931826152226, + "fos_yielding": 4.192555202000335, + "deflection": 0.0015577730814074187, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.112)" + }, + "parent_node_id": "node_1411", + "improvement_over_parent": null + }, + "node_1413": { + "node_id": "node_1413", + "content": "MODIFICATION: Increase 4 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 211.68 kg\n Factor of Safety: 1.27\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.68268792306836, + "fos_buckling": 1.2655901697839158, + "fos_yielding": 4.192555202000335, + "deflection": 0.0015528444237564178, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.427)" + }, + "parent_node_id": "node_1412", + "improvement_over_parent": null + }, + "node_1414": { + "node_id": "node_1414", + "content": "MODIFICATION: Increase 9 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.59 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.59065863028678, + "fos_buckling": 1.5216758956679217, + "fos_yielding": 4.192555202000335, + "deflection": 0.0014713660290699474, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.250)" + }, + "parent_node_id": "node_1413", + "improvement_over_parent": null + }, + "node_1415": { + "node_id": "node_1415", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.15 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1450659659848, + "fos_buckling": 1.5676689210864938, + "fos_yielding": 4.148793943918354, + "deflection": 0.0014511521688096237, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1414", + "improvement_over_parent": null + }, + "node_1416": { + "node_id": "node_1416", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1415", + "improvement_over_parent": null + }, + "node_1417": { + "node_id": "node_1417", + "content": "INITIAL DESIGN (Trace 205)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 200.07 kg\n Factor of Safety: 1.14\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.06826329725072, + "fos_buckling": 1.1373071079377373, + "fos_yielding": 2.8248485397999565, + "deflection": 0.001558515531923844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1418": { + "node_id": "node_1418", + "content": "MODIFICATION: Increase 5 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.42 kg\n Factor of Safety: 1.14\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.41503401207848, + "fos_buckling": 1.1373071079377373, + "fos_yielding": 2.8248485397999565, + "deflection": 0.001558515531923844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.183)" + }, + "parent_node_id": "node_1417", + "improvement_over_parent": null + }, + "node_1419": { + "node_id": "node_1419", + "content": "MODIFICATION: Increase 4 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 206.64 kg\n Factor of Safety: 1.14\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.6438080680117, + "fos_buckling": 1.1375848085111484, + "fos_yielding": 2.825538293740495, + "deflection": 0.0015513282793102779, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.623)" + }, + "parent_node_id": "node_1418", + "improvement_over_parent": null + }, + "node_1420": { + "node_id": "node_1420", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 211.82 kg\n Factor of Safety: 1.14\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.81815094474038, + "fos_buckling": 1.1418453862772915, + "fos_yielding": 2.8361207360706207, + "deflection": 0.001518570540333236, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1419", + "improvement_over_parent": null + }, + "node_1421": { + "node_id": "node_1421", + "content": "MODIFICATION: Increase 4 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0039)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 214.63 kg\n Factor of Safety: 1.14\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.62978028472034, + "fos_buckling": 1.140941988547273, + "fos_yielding": 2.833876872701887, + "deflection": 0.001519772944305376, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.531)" + }, + "parent_node_id": "node_1420", + "improvement_over_parent": null + }, + "node_1422": { + "node_id": "node_1422", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1421", + "improvement_over_parent": null + }, + "node_1423": { + "node_id": "node_1423", + "content": "INITIAL DESIGN (Trace 206)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 127.22 kg\n Factor of Safety: 0.83\n Max Deflection: 2.60e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.21939402755538, + "fos_buckling": 0.8272280412119207, + "fos_yielding": 2.51996948930992, + "deflection": 0.002604224985361579, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1424": { + "node_id": "node_1424", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 154.95 kg\n Factor of Safety: 0.99\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.95432188780245, + "fos_buckling": 0.9892013420835232, + "fos_yielding": 3.0670526826336286, + "deflection": 0.002141154972982337, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_1423", + "improvement_over_parent": null + }, + "node_1425": { + "node_id": "node_1425", + "content": "MODIFICATION: Increase 6 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 160.50 kg\n Factor of Safety: 1.17\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.50437803227692, + "fos_buckling": 1.1715503120931552, + "fos_yielding": 3.067052682633628, + "deflection": 0.0020049666770089072, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.225)" + }, + "parent_node_id": "node_1424", + "improvement_over_parent": null + }, + "node_1426": { + "node_id": "node_1426", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 195.29 kg\n Factor of Safety: 1.38\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.28510481545837, + "fos_buckling": 1.382896875087719, + "fos_yielding": 3.730033121108373, + "deflection": 0.0016517816637704292, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.235)" + }, + "parent_node_id": "node_1425", + "improvement_over_parent": null + }, + "node_1427": { + "node_id": "node_1427", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.81 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.80983323955667, + "fos_buckling": 1.5229705121041996, + "fos_yielding": 4.19716659003871, + "deflection": 0.0014699340521010119, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.138)" + }, + "parent_node_id": "node_1426", + "improvement_over_parent": null + }, + "node_1428": { + "node_id": "node_1428", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.36424057525468, + "fos_buckling": 1.568632663055499, + "fos_yielding": 4.15338047053474, + "deflection": 0.0014497575677060951, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1427", + "improvement_over_parent": null + }, + "node_1429": { + "node_id": "node_1429", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1428", + "improvement_over_parent": null + }, + "node_1430": { + "node_id": "node_1430", + "content": "INITIAL DESIGN (Trace 207)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1431": { + "node_id": "node_1431", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 155.71 kg\n Factor of Safety: 0.87\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.7065901855934, + "fos_buckling": 0.8657091711070505, + "fos_yielding": 3.357407902730491, + "deflection": 0.0021830569795013854, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001545)" + }, + "parent_node_id": "node_1430", + "improvement_over_parent": null + }, + "node_1432": { + "node_id": "node_1432", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n\nPerformance:\n Mass: 175.72 kg\n Factor of Safety: 0.97\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.71646506827923, + "fos_buckling": 0.9678433646805233, + "fos_yielding": 3.785967698345454, + "deflection": 0.001934311713782805, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.139)" + }, + "parent_node_id": "node_1431", + "improvement_over_parent": null + }, + "node_1433": { + "node_id": "node_1433", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 181.27 kg\n Factor of Safety: 0.95\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.2665317054349, + "fos_buckling": 0.9549267329062877, + "fos_yielding": 3.785967698345454, + "deflection": 0.0018103955377029698, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002292)" + }, + "parent_node_id": "node_1432", + "improvement_over_parent": null + }, + "node_1434": { + "node_id": "node_1434", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 201.16 kg\n Factor of Safety: 1.04\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.15971372073528, + "fos_buckling": 1.0404891975986206, + "fos_yielding": 4.1983447037828565, + "deflection": 0.0016325830216685564, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_1433", + "improvement_over_parent": null + }, + "node_1435": { + "node_id": "node_1435", + "content": "MODIFICATION: Increase 9 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0039)]\n\nPerformance:\n Mass: 203.88 kg\n Factor of Safety: 0.98\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.88318275711362, + "fos_buckling": 0.9842991921596668, + "fos_yielding": 4.1983447037828565, + "deflection": 0.001626590047739163, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.513)" + }, + "parent_node_id": "node_1434", + "improvement_over_parent": null + }, + "node_1436": { + "node_id": "node_1436", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0039)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 212.50 kg\n Factor of Safety: 1.02\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.49628737187427, + "fos_buckling": 1.0162174766401957, + "fos_yielding": 4.1550777624036686, + "deflection": 0.0016074712884319134, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1435", + "improvement_over_parent": null + }, + "node_1437": { + "node_id": "node_1437", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1436", + "improvement_over_parent": null + }, + "node_1438": { + "node_id": "node_1438", + "content": "INITIAL DESIGN (Trace 208)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 167.25 kg\n Factor of Safety: 1.07\n Max Deflection: 3.69e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.24928939821737, + "fos_buckling": 1.0718265241451337, + "fos_yielding": 0.540633974214425, + "deflection": 36866595212460.77, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1439": { + "node_id": "node_1439", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 172.67 kg\n Factor of Safety: 0.06\n Max Deflection: 7.51e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.67425649023198, + "fos_buckling": 0.06041934475922791, + "fos_yielding": 1.105147753223321, + "deflection": 0.007514758488875464, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001560)" + }, + "parent_node_id": "node_1438", + "improvement_over_parent": null + }, + "node_1440": { + "node_id": "node_1440", + "content": "MODIFICATION: Increase 7 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 179.56 kg\n Factor of Safety: 0.06\n Max Deflection: 7.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.5577333454076, + "fos_buckling": 0.060375291653416686, + "fos_yielding": 1.1043419650919897, + "deflection": 0.0075167147611597245, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.645)" + }, + "parent_node_id": "node_1439", + "improvement_over_parent": null + }, + "node_1441": { + "node_id": "node_1441", + "content": "MODIFICATION: Increase 0 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 183.35 kg\n Factor of Safety: 0.06\n Max Deflection: 7.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.3473662064112, + "fos_buckling": 0.06035106604192156, + "fos_yielding": 1.1038988474080598, + "deflection": 0.007518851024061551, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.294)" + }, + "parent_node_id": "node_1440", + "improvement_over_parent": null + }, + "node_1442": { + "node_id": "node_1442", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n\nPerformance:\n Mass: 211.47 kg\n Factor of Safety: 0.97\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.4708040858541, + "fos_buckling": 0.9730561868259745, + "fos_yielding": 4.11839788638147, + "deflection": 0.0016708536492053522, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003599)" + }, + "parent_node_id": "node_1441", + "improvement_over_parent": null + }, + "node_1443": { + "node_id": "node_1443", + "content": "MODIFICATION: Increase 7 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0082)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n\nPerformance:\n Mass: 220.20 kg\n Factor of Safety: 0.98\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.20445836134755, + "fos_buckling": 0.9825549516475546, + "fos_yielding": 4.119125127100113, + "deflection": 0.0016670247868880532, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.603)" + }, + "parent_node_id": "node_1442", + "improvement_over_parent": null + }, + "node_1444": { + "node_id": "node_1444", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1443", + "improvement_over_parent": null + }, + "node_1445": { + "node_id": "node_1445", + "content": "INITIAL DESIGN (Trace 209)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1446": { + "node_id": "node_1446", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 128.39 kg\n Factor of Safety: 0.01\n Max Deflection: 2.36e+14 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.3874917954523, + "fos_buckling": 0.009202419214336822, + "fos_yielding": 0.13781918075600186, + "deflection": 236176115927045.38, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1445", + "improvement_over_parent": null + }, + "node_1447": { + "node_id": "node_1447", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 171.04 kg\n Factor of Safety: 0.09\n Max Deflection: 1.04e+14 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.0394601468257, + "fos_buckling": 0.09043181980376223, + "fos_yielding": 0.2703169871072125, + "deflection": 104472588034647.14, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1446", + "improvement_over_parent": null + }, + "node_1448": { + "node_id": "node_1448", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.65 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.6505143895864, + "fos_buckling": 1.5232703109122072, + "fos_yielding": 4.19645566016795, + "deflection": 0.0014701147163442613, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1447", + "improvement_over_parent": null + }, + "node_1449": { + "node_id": "node_1449", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26361900434705, + "fos_buckling": 1.5680862480590454, + "fos_yielding": 4.151346366054904, + "deflection": 0.0014503995610686605, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1448", + "improvement_over_parent": null + }, + "node_1450": { + "node_id": "node_1450", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1449", + "improvement_over_parent": null + }, + "node_1451": { + "node_id": "node_1451", + "content": "INITIAL DESIGN (Trace 210)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1452": { + "node_id": "node_1452", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n\nPerformance:\n Mass: 152.00 kg\n Factor of Safety: 0.90\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.00041506206293, + "fos_buckling": 0.8981146868848896, + "fos_yielding": 2.4989505290492984, + "deflection": 0.002140810494222939, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001498)" + }, + "parent_node_id": "node_1451", + "improvement_over_parent": null + }, + "node_1453": { + "node_id": "node_1453", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 154.74 kg\n Factor of Safety: 0.81\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.7375622687828, + "fos_buckling": 0.8125818011259388, + "fos_yielding": 2.5105377731916225, + "deflection": 0.0020833343737168826, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001483)" + }, + "parent_node_id": "node_1452", + "improvement_over_parent": null + }, + "node_1454": { + "node_id": "node_1454", + "content": "MODIFICATION: Increase 8 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0055)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 163.41 kg\n Factor of Safety: 0.77\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.40788930188327, + "fos_buckling": 0.770005006417587, + "fos_yielding": 2.5341877364138865, + "deflection": 0.0019715100113283242, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.289)" + }, + "parent_node_id": "node_1453", + "improvement_over_parent": null + }, + "node_1455": { + "node_id": "node_1455", + "content": "MODIFICATION: Increase 6 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0055)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 176.26 kg\n Factor of Safety: 0.91\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.25785970896166, + "fos_buckling": 0.9083457529610565, + "fos_yielding": 2.5274178599560604, + "deflection": 0.0017450469003130245, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.541)" + }, + "parent_node_id": "node_1454", + "improvement_over_parent": null + }, + "node_1456": { + "node_id": "node_1456", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0067)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 228.56 kg\n Factor of Safety: 1.16\n Max Deflection: 1.35e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.55634693932686, + "fos_buckling": 1.156114251493789, + "fos_yielding": 3.303410599065701, + "deflection": 0.001351342005488978, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.328)" + }, + "parent_node_id": "node_1455", + "improvement_over_parent": null + }, + "node_1457": { + "node_id": "node_1457", + "content": "MODIFICATION: Increase 7 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0067)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0041)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 232.15 kg\n Factor of Safety: 1.16\n Max Deflection: 1.35e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 232.1538340966959, + "fos_buckling": 1.1556015638885302, + "fos_yielding": 3.3019456766611612, + "deflection": 0.0013515682758091718, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.326)" + }, + "parent_node_id": "node_1456", + "improvement_over_parent": null + }, + "node_1458": { + "node_id": "node_1458", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1457", + "improvement_over_parent": null + }, + "node_1459": { + "node_id": "node_1459", + "content": "INITIAL DESIGN (Trace 211)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1460": { + "node_id": "node_1460", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 168.21 kg\n Factor of Safety: 1.09\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.20703309668636, + "fos_buckling": 1.0854169071396182, + "fos_yielding": 3.1943305962177453, + "deflection": 0.0019337373526666605, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002336)" + }, + "parent_node_id": "node_1459", + "improvement_over_parent": null + }, + "node_1461": { + "node_id": "node_1461", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 172.20 kg\n Factor of Safety: 1.26\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.19677527080862, + "fos_buckling": 1.263234047168093, + "fos_yielding": 3.2048096792807943, + "deflection": 0.0018744962466152137, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001792)" + }, + "parent_node_id": "node_1460", + "improvement_over_parent": null + }, + "node_1462": { + "node_id": "node_1462", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33908163436504, + "fos_buckling": 1.568463599383883, + "fos_yielding": 4.1528403417559, + "deflection": 0.0014499227540867813, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.326)" + }, + "parent_node_id": "node_1461", + "improvement_over_parent": null + }, + "node_1463": { + "node_id": "node_1463", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1462", + "improvement_over_parent": null + }, + "node_1464": { + "node_id": "node_1464", + "content": "INITIAL DESIGN (Trace 212)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1465": { + "node_id": "node_1465", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 130.98 kg\n Factor of Safety: 0.68\n Max Deflection: 9.07e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.97997453639988, + "fos_buckling": 0.6813489942787101, + "fos_yielding": 1.9622299962165144, + "deflection": 9073509914963.969, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002072)" + }, + "parent_node_id": "node_1464", + "improvement_over_parent": null + }, + "node_1466": { + "node_id": "node_1466", + "content": "MODIFICATION: Increase 0 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 133.54 kg\n Factor of Safety: 0.10\n Max Deflection: 7.55e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 133.53860094692988, + "fos_buckling": 0.10024500186705217, + "fos_yielding": 1.0200918081601402, + "deflection": 7546094297649.293, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.209)" + }, + "parent_node_id": "node_1465", + "improvement_over_parent": null + }, + "node_1467": { + "node_id": "node_1467", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 136.67 kg\n Factor of Safety: 0.03\n Max Deflection: 3.50e+13 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.67415759170478, + "fos_buckling": 0.03286645989405574, + "fos_yielding": 0.540633974214425, + "deflection": 34984196634082.496, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001717)" + }, + "parent_node_id": "node_1466", + "improvement_over_parent": null + }, + "node_1468": { + "node_id": "node_1468", + "content": "MODIFICATION: Increase 4 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0082)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 151.80 kg\n Factor of Safety: 0.03\n Max Deflection: 3.50e+13 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.80337797144114, + "fos_buckling": 0.03286645989405574, + "fos_yielding": 0.540633974214425, + "deflection": 34984196634082.496, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.647)" + }, + "parent_node_id": "node_1467", + "improvement_over_parent": null + }, + "node_1469": { + "node_id": "node_1469", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0082)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 162.87 kg\n Factor of Safety: 0.12\n Max Deflection: 5.22e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.87396118819723, + "fos_buckling": 0.11538931265861822, + "fos_yielding": 1.89808646521685, + "deflection": 0.005218949458585134, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002700)" + }, + "parent_node_id": "node_1468", + "improvement_over_parent": null + }, + "node_1470": { + "node_id": "node_1470", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0082)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 200.50 kg\n Factor of Safety: 0.95\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.49665745167678, + "fos_buckling": 0.954504994441527, + "fos_yielding": 2.335548618366297, + "deflection": 0.0018440418515619141, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004977)" + }, + "parent_node_id": "node_1469", + "improvement_over_parent": null + }, + "node_1471": { + "node_id": "node_1471", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0094)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 227.02 kg\n Factor of Safety: 1.06\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 227.01803317722366, + "fos_buckling": 1.0612389327676732, + "fos_yielding": 2.6590590287900833, + "deflection": 0.0016196892780468836, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.147)" + }, + "parent_node_id": "node_1470", + "improvement_over_parent": null + }, + "node_1472": { + "node_id": "node_1472", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1471", + "improvement_over_parent": null + }, + "node_1473": { + "node_id": "node_1473", + "content": "INITIAL DESIGN (Trace 213)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n\nPerformance:\n Mass: 148.87 kg\n Factor of Safety: 0.11\n Max Deflection: 6.48e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.87401300338678, + "fos_buckling": 0.11080149689405895, + "fos_yielding": 1.5661930825487667, + "deflection": 0.0064800997292406804, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1474": { + "node_id": "node_1474", + "content": "MODIFICATION: Increase 9 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 151.74 kg\n Factor of Safety: 0.11\n Max Deflection: 5.75e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.74330383191602, + "fos_buckling": 0.11076775596537479, + "fos_yielding": 1.8085641994534343, + "deflection": 0.0057473247581093425, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.403)" + }, + "parent_node_id": "node_1473", + "improvement_over_parent": null + }, + "node_1475": { + "node_id": "node_1475", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 180.62 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.61894634844927, + "fos_buckling": 0.1278882282876498, + "fos_yielding": 2.1483002100653295, + "deflection": 0.004836046793064694, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_1474", + "improvement_over_parent": null + }, + "node_1476": { + "node_id": "node_1476", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27091469982267, + "fos_buckling": 1.5681029398225683, + "fos_yielding": 4.1515055946322095, + "deflection": 0.0014503777793987724, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1475", + "improvement_over_parent": null + }, + "node_1477": { + "node_id": "node_1477", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1476", + "improvement_over_parent": null + }, + "node_1478": { + "node_id": "node_1478", + "content": "INITIAL DESIGN (Trace 214)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 140.70 kg\n Factor of Safety: 0.05\n Max Deflection: 8.67e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.69827100352566, + "fos_buckling": 0.04977852224752095, + "fos_yielding": 1.051054852775061, + "deflection": 0.008671153240479056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1479": { + "node_id": "node_1479", + "content": "MODIFICATION: Increase 7 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 142.38 kg\n Factor of Safety: 0.05\n Max Deflection: 7.68e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.37773862479287, + "fos_buckling": 0.049769643494606844, + "fos_yielding": 1.1729409823815724, + "deflection": 0.0076835004959574385, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.350)" + }, + "parent_node_id": "node_1478", + "improvement_over_parent": null + }, + "node_1480": { + "node_id": "node_1480", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.60 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.600382386893, + "fos_buckling": 0.06036034775888356, + "fos_yielding": 1.4756829893244536, + "deflection": 0.00610386505147551, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_1479", + "improvement_over_parent": null + }, + "node_1481": { + "node_id": "node_1481", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2114366296537, + "fos_buckling": 1.5676431830659856, + "fos_yielding": 4.150154866257129, + "deflection": 0.0014507150894010113, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1480", + "improvement_over_parent": null + }, + "node_1482": { + "node_id": "node_1482", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1481", + "improvement_over_parent": null + }, + "node_1483": { + "node_id": "node_1483", + "content": "INITIAL DESIGN (Trace 215)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 139.71 kg\n Factor of Safety: 0.95\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.70798253048912, + "fos_buckling": 0.9489975655166223, + "fos_yielding": 2.7478172889297188, + "deflection": 0.002329504050451928, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1484": { + "node_id": "node_1484", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 175.09 kg\n Factor of Safety: 1.15\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.0891030213796, + "fos_buckling": 1.1482138863407856, + "fos_yielding": 3.4406789739901193, + "deflection": 0.0018627014067237023, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.272)" + }, + "parent_node_id": "node_1483", + "improvement_over_parent": null + }, + "node_1485": { + "node_id": "node_1485", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 213.62 kg\n Factor of Safety: 1.35\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.62189907412068, + "fos_buckling": 1.347325093808998, + "fos_yielding": 4.193743707662438, + "deflection": 0.001530195795657705, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.241)" + }, + "parent_node_id": "node_1484", + "improvement_over_parent": null + }, + "node_1486": { + "node_id": "node_1486", + "content": "MODIFICATION: Increase 9 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.66 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.65666252183527, + "fos_buckling": 1.5220234169282856, + "fos_yielding": 4.19374370766244, + "deflection": 0.0014708865885359153, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.181)" + }, + "parent_node_id": "node_1485", + "improvement_over_parent": null + }, + "node_1487": { + "node_id": "node_1487", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2110698575333, + "fos_buckling": 1.5682321231060463, + "fos_yielding": 4.149980359155382, + "deflection": 0.0014506864062488933, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1486", + "improvement_over_parent": null + }, + "node_1488": { + "node_id": "node_1488", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1487", + "improvement_over_parent": null + }, + "node_1489": { + "node_id": "node_1489", + "content": "INITIAL DESIGN (Trace 216)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1490": { + "node_id": "node_1490", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 144.39 kg\n Factor of Safety: 0.05\n Max Deflection: 1.16e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.38771309410905, + "fos_buckling": 0.05156883944256138, + "fos_yielding": 1.2379808268404573, + "deflection": 0.011616531366002764, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004697)" + }, + "parent_node_id": "node_1489", + "improvement_over_parent": null + }, + "node_1491": { + "node_id": "node_1491", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 149.48 kg\n Factor of Safety: 0.11\n Max Deflection: 5.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.4799881827288, + "fos_buckling": 0.10937739958362314, + "fos_yielding": 1.7819614207184322, + "deflection": 0.005834047882340879, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002088)" + }, + "parent_node_id": "node_1490", + "improvement_over_parent": null + }, + "node_1492": { + "node_id": "node_1492", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 180.65 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.64999746510543, + "fos_buckling": 0.12791090913087227, + "fos_yielding": 2.148765933944838, + "deflection": 0.004835561000562676, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.229)" + }, + "parent_node_id": "node_1491", + "improvement_over_parent": null + }, + "node_1493": { + "node_id": "node_1493", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.30 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.30196581647883, + "fos_buckling": 1.5681218193600146, + "fos_yielding": 4.152403495999056, + "deflection": 0.0014501963663970869, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1492", + "improvement_over_parent": null + }, + "node_1494": { + "node_id": "node_1494", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1493", + "improvement_over_parent": null + }, + "node_1495": { + "node_id": "node_1495", + "content": "INITIAL DESIGN (Trace 217)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 164.11 kg\n Factor of Safety: 1.23\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.10688693229946, + "fos_buckling": 1.2343170609529817, + "fos_yielding": 3.428360144672246, + "deflection": 0.0018818063326166469, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1496": { + "node_id": "node_1496", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 171.14 kg\n Factor of Safety: 1.15\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.14169651374755, + "fos_buckling": 1.1465690580740855, + "fos_yielding": 3.3817731197568155, + "deflection": 0.0018267247113060246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002058)" + }, + "parent_node_id": "node_1495", + "improvement_over_parent": null + }, + "node_1497": { + "node_id": "node_1497", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 209.66 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.65527035493074, + "fos_buckling": 1.3398450115173977, + "fos_yielding": 4.139406920145712, + "deflection": 0.0014952521433415455, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.247)" + }, + "parent_node_id": "node_1496", + "improvement_over_parent": null + }, + "node_1498": { + "node_id": "node_1498", + "content": "MODIFICATION: Increase 3 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.77 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.77209355553356, + "fos_buckling": 1.339371410678788, + "fos_yielding": 4.139387409049664, + "deflection": 0.0014954204604450895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.302)" + }, + "parent_node_id": "node_1497", + "improvement_over_parent": null + }, + "node_1499": { + "node_id": "node_1499", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3204511756298, + "fos_buckling": 1.568352950487379, + "fos_yielding": 4.152494321293123, + "deflection": 0.0014500402765375688, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1498", + "improvement_over_parent": null + }, + "node_1500": { + "node_id": "node_1500", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1499", + "improvement_over_parent": null + }, + "node_1501": { + "node_id": "node_1501", + "content": "INITIAL DESIGN (Trace 218)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 129.13 kg\n Factor of Safety: 0.87\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.13138507042268, + "fos_buckling": 0.8693954853314707, + "fos_yielding": 2.0981222876542676, + "deflection": 0.0024508671949457, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1502": { + "node_id": "node_1502", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 147.54 kg\n Factor of Safety: 0.98\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.5356659855708, + "fos_buckling": 0.982169252199851, + "fos_yielding": 2.3989239822323003, + "deflection": 0.002147920108263565, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_1501", + "improvement_over_parent": null + }, + "node_1503": { + "node_id": "node_1503", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 181.54 kg\n Factor of Safety: 1.18\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.5422300685085, + "fos_buckling": 1.1831860549953606, + "fos_yielding": 2.9561455843517983, + "deflection": 0.0017497706211652042, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_1502", + "improvement_over_parent": null + }, + "node_1504": { + "node_id": "node_1504", + "content": "MODIFICATION: Increase 4 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 185.91 kg\n Factor of Safety: 1.35\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.91345162867225, + "fos_buckling": 1.348231053640636, + "fos_yielding": 3.4589096751736723, + "deflection": 0.0017376783259247341, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.190)" + }, + "parent_node_id": "node_1503", + "improvement_over_parent": null + }, + "node_1505": { + "node_id": "node_1505", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1580605442692, + "fos_buckling": 1.5674663018673387, + "fos_yielding": 4.149090508147227, + "deflection": 0.0014510650092677646, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_1504", + "improvement_over_parent": null + }, + "node_1506": { + "node_id": "node_1506", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1505", + "improvement_over_parent": null + }, + "node_1507": { + "node_id": "node_1507", + "content": "INITIAL DESIGN (Trace 219)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 167.66 kg\n Factor of Safety: 0.98\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.66059537755592, + "fos_buckling": 0.977879407331646, + "fos_yielding": 3.558307442843342, + "deflection": 0.0021454802732752357, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1508": { + "node_id": "node_1508", + "content": "MODIFICATION: Increase 9 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 178.00 kg\n Factor of Safety: 1.29\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.00441895506884, + "fos_buckling": 1.286495925534408, + "fos_yielding": 3.534183294241042, + "deflection": 0.00192309799634728, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.437)" + }, + "parent_node_id": "node_1507", + "improvement_over_parent": null + }, + "node_1509": { + "node_id": "node_1509", + "content": "MODIFICATION: Increase 0 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 180.18 kg\n Factor of Safety: 1.29\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.1806760348079, + "fos_buckling": 1.293998325951433, + "fos_yielding": 3.540004606668212, + "deflection": 0.0018663845010658097, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.182)" + }, + "parent_node_id": "node_1508", + "improvement_over_parent": null + }, + "node_1510": { + "node_id": "node_1510", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.51 kg\n Factor of Safety: 1.49\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.5074062740636, + "fos_buckling": 1.4945999188807135, + "fos_yielding": 4.2104810332233855, + "deflection": 0.0015696489015980396, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.209)" + }, + "parent_node_id": "node_1509", + "improvement_over_parent": null + }, + "node_1511": { + "node_id": "node_1511", + "content": "MODIFICATION: Increase 1 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.19 kg\n Factor of Safety: 1.49\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.18937485121592, + "fos_buckling": 1.4854810771227263, + "fos_yielding": 4.202521652907312, + "deflection": 0.0015196196714862328, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.198)" + }, + "parent_node_id": "node_1510", + "improvement_over_parent": null + }, + "node_1512": { + "node_id": "node_1512", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.34318958951374, + "fos_buckling": 1.568913513413519, + "fos_yielding": 4.151961780785024, + "deflection": 0.001449688833755598, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1511", + "improvement_over_parent": null + }, + "node_1513": { + "node_id": "node_1513", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1512", + "improvement_over_parent": null + }, + "node_1514": { + "node_id": "node_1514", + "content": "INITIAL DESIGN (Trace 220)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 151.96 kg\n Factor of Safety: 0.06\n Max Deflection: 1.10e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.96450385647546, + "fos_buckling": 0.05580971725535791, + "fos_yielding": 1.3419932216357087, + "deflection": 0.011012021682673071, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1515": { + "node_id": "node_1515", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n\nPerformance:\n Mass: 191.52 kg\n Factor of Safety: 1.26\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.51664951995792, + "fos_buckling": 1.2623640826511726, + "fos_yielding": 3.178536075280933, + "deflection": 0.001674635366262155, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005187)" + }, + "parent_node_id": "node_1514", + "improvement_over_parent": null + }, + "node_1516": { + "node_id": "node_1516", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 211.09 kg\n Factor of Safety: 1.37\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.08705463965146, + "fos_buckling": 1.374079830671845, + "fos_yielding": 3.507184945484942, + "deflection": 0.0015211665486553362, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.112)" + }, + "parent_node_id": "node_1515", + "improvement_over_parent": null + }, + "node_1517": { + "node_id": "node_1517", + "content": "MODIFICATION: Increase 4 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 216.97 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.9748479046541, + "fos_buckling": 1.4838370530777472, + "fos_yielding": 4.1988906558987305, + "deflection": 0.0015213771116035877, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.222)" + }, + "parent_node_id": "node_1516", + "improvement_over_parent": null + }, + "node_1518": { + "node_id": "node_1518", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.13 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.12866264295192, + "fos_buckling": 1.5673060783389683, + "fos_yielding": 4.14829916187276, + "deflection": 0.0014512597928819887, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1517", + "improvement_over_parent": null + }, + "node_1519": { + "node_id": "node_1519", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1518", + "improvement_over_parent": null + }, + "node_1520": { + "node_id": "node_1520", + "content": "INITIAL DESIGN (Trace 221)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 166.35 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.34743556830583, + "fos_buckling": 0.060459892096909475, + "fos_yielding": 1.4781950522865088, + "deflection": 0.006109965381844622, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1521": { + "node_id": "node_1521", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 178.90 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.89579318840208, + "fos_buckling": 0.060379525168258494, + "fos_yielding": 1.4762301464261258, + "deflection": 0.006102957514391708, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1520", + "improvement_over_parent": null + }, + "node_1522": { + "node_id": "node_1522", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 222.51 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.50684743116278, + "fos_buckling": 1.563695645590629, + "fos_yielding": 4.150849900700568, + "deflection": 0.0014520348987178686, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1521", + "improvement_over_parent": null + }, + "node_1523": { + "node_id": "node_1523", + "content": "MODIFICATION: Increase 3 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26331938287655, + "fos_buckling": 1.5680219893406082, + "fos_yielding": 4.151349659524352, + "deflection": 0.0014504120815414074, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.188)" + }, + "parent_node_id": "node_1522", + "improvement_over_parent": null + }, + "node_1524": { + "node_id": "node_1524", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1523", + "improvement_over_parent": null + }, + "node_1525": { + "node_id": "node_1525", + "content": "INITIAL DESIGN (Trace 222)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 149.11 kg\n Factor of Safety: 1.04\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.10556502228334, + "fos_buckling": 1.0391504905393825, + "fos_yielding": 2.830186293965989, + "deflection": 0.002219861926268755, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1526": { + "node_id": "node_1526", + "content": "MODIFICATION: Increase 1 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 151.88 kg\n Factor of Safety: 1.13\n Max Deflection: 2.12e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.87772211431337, + "fos_buckling": 1.1331795389632056, + "fos_yielding": 2.8277000685989453, + "deflection": 0.0021225774198669143, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.321)" + }, + "parent_node_id": "node_1525", + "improvement_over_parent": null + }, + "node_1527": { + "node_id": "node_1527", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 198.12 kg\n Factor of Safety: 1.42\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.1185271442309, + "fos_buckling": 1.421924255136783, + "fos_yielding": 3.6855762456540595, + "deflection": 0.0016319244945169286, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.330)" + }, + "parent_node_id": "node_1526", + "improvement_over_parent": null + }, + "node_1528": { + "node_id": "node_1528", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.36010790572436, + "fos_buckling": 1.5686129115108196, + "fos_yielding": 4.153269337462251, + "deflection": 0.0014498059995247078, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_1527", + "improvement_over_parent": null + }, + "node_1529": { + "node_id": "node_1529", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1528", + "improvement_over_parent": null + }, + "node_1530": { + "node_id": "node_1530", + "content": "INITIAL DESIGN (Trace 223)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n\nPerformance:\n Mass: 96.82 kg\n Factor of Safety: 0.76\n Max Deflection: 3.32e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 96.82282949632827, + "fos_buckling": 0.7553355258679132, + "fos_yielding": 1.804427344362255, + "deflection": 0.003317880762932643, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1531": { + "node_id": "node_1531", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 127.54 kg\n Factor of Safety: 0.97\n Max Deflection: 2.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.53806758622, + "fos_buckling": 0.9707063219182481, + "fos_yielding": 2.375542670148398, + "deflection": 0.0025237369845004585, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.333)" + }, + "parent_node_id": "node_1530", + "improvement_over_parent": null + }, + "node_1532": { + "node_id": "node_1532", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 158.58 kg\n Factor of Safety: 1.18\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.5775369494747, + "fos_buckling": 1.176603136103434, + "fos_yielding": 2.952049660926289, + "deflection": 0.002033737478807401, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.259)" + }, + "parent_node_id": "node_1531", + "improvement_over_parent": null + }, + "node_1533": { + "node_id": "node_1533", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 190.14 kg\n Factor of Safety: 1.37\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.1411041365203, + "fos_buckling": 1.3739362662786363, + "fos_yielding": 3.537635293231247, + "deflection": 0.0016995183874112228, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_1532", + "improvement_over_parent": null + }, + "node_1534": { + "node_id": "node_1534", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.03 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.03449151938725, + "fos_buckling": 1.5667401630020028, + "fos_yielding": 4.147190254662252, + "deflection": 0.001451876895326431, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.190)" + }, + "parent_node_id": "node_1533", + "improvement_over_parent": null + }, + "node_1535": { + "node_id": "node_1535", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1534", + "improvement_over_parent": null + }, + "node_1536": { + "node_id": "node_1536", + "content": "INITIAL DESIGN (Trace 224)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0014)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0018)]\n\nPerformance:\n Mass: 104.92 kg\n Factor of Safety: 0.57\n Max Deflection: 3.60e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 104.92400341639168, + "fos_buckling": 0.5676025443112094, + "fos_yielding": 2.3117465139450064, + "deflection": 0.003603565707640926, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1537": { + "node_id": "node_1537", + "content": "MODIFICATION: Increase 1 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0018)]\n\nPerformance:\n Mass: 108.36 kg\n Factor of Safety: 0.57\n Max Deflection: 3.34e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.35859907425468, + "fos_buckling": 0.5738902731197062, + "fos_yielding": 2.299254523495054, + "deflection": 0.0033364144162098255, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.595)" + }, + "parent_node_id": "node_1536", + "improvement_over_parent": null + }, + "node_1538": { + "node_id": "node_1538", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n\nPerformance:\n Mass: 125.45 kg\n Factor of Safety: 0.66\n Max Deflection: 2.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.4511511166846, + "fos_buckling": 0.6598735579821609, + "fos_yielding": 2.6596295257229885, + "deflection": 0.002881470981694105, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.166)" + }, + "parent_node_id": "node_1537", + "improvement_over_parent": null + }, + "node_1539": { + "node_id": "node_1539", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n\nPerformance:\n Mass: 129.30 kg\n Factor of Safety: 0.65\n Max Deflection: 2.66e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.29513395493743, + "fos_buckling": 0.6490890841302894, + "fos_yielding": 2.607018855419024, + "deflection": 0.0026643353898666393, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001547)" + }, + "parent_node_id": "node_1538", + "improvement_over_parent": null + }, + "node_1540": { + "node_id": "node_1540", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 168.28 kg\n Factor of Safety: 0.82\n Max Deflection: 2.05e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.28420549135694, + "fos_buckling": 0.8179612401852104, + "fos_yielding": 3.3874354534887763, + "deflection": 0.002048979262857237, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.323)" + }, + "parent_node_id": "node_1539", + "improvement_over_parent": null + }, + "node_1541": { + "node_id": "node_1541", + "content": "MODIFICATION: Increase 10 thickness by 66%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n\nPerformance:\n Mass: 171.20 kg\n Factor of Safety: 0.76\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.19755266637466, + "fos_buckling": 0.7611968101725479, + "fos_yielding": 3.3794010869162476, + "deflection": 0.0020300522391118532, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.661)" + }, + "parent_node_id": "node_1540", + "improvement_over_parent": null + }, + "node_1542": { + "node_id": "node_1542", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0043)]\n\nPerformance:\n Mass: 211.02 kg\n Factor of Safety: 0.91\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.01734873095646, + "fos_buckling": 0.9103337005942131, + "fos_yielding": 4.16113275652291, + "deflection": 0.0016481554181458577, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_1541", + "improvement_over_parent": null + }, + "node_1543": { + "node_id": "node_1543", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1542", + "improvement_over_parent": null + }, + "node_1544": { + "node_id": "node_1544", + "content": "INITIAL DESIGN (Trace 225)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n\nPerformance:\n Mass: 100.75 kg\n Factor of Safety: 0.76\n Max Deflection: 3.26e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 100.74819810936643, + "fos_buckling": 0.7592803443079018, + "fos_yielding": 1.9546995018685633, + "deflection": 0.003258891860314754, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1545": { + "node_id": "node_1545", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 112.70 kg\n Factor of Safety: 0.84\n Max Deflection: 2.91e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.70444792653822, + "fos_buckling": 0.8412598262441264, + "fos_yielding": 2.186123054946851, + "deflection": 0.0029147983777015043, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.124)" + }, + "parent_node_id": "node_1544", + "improvement_over_parent": null + }, + "node_1546": { + "node_id": "node_1546", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 145.77 kg\n Factor of Safety: 1.06\n Max Deflection: 2.26e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.77263911914895, + "fos_buckling": 1.0590721495414217, + "fos_yielding": 2.8255811121287886, + "deflection": 0.0022570600086756587, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_1545", + "improvement_over_parent": null + }, + "node_1547": { + "node_id": "node_1547", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 188.62 kg\n Factor of Safety: 1.32\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.6249852068773, + "fos_buckling": 1.3219049128488753, + "fos_yielding": 3.6529204519316627, + "deflection": 0.0017477770103482412, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.318)" + }, + "parent_node_id": "node_1546", + "improvement_over_parent": null + }, + "node_1548": { + "node_id": "node_1548", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 193.97 kg\n Factor of Safety: 1.40\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.96722990827817, + "fos_buckling": 1.3970415108514334, + "fos_yielding": 3.6086521686417403, + "deflection": 0.0016663812240467872, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002199)" + }, + "parent_node_id": "node_1547", + "improvement_over_parent": null + }, + "node_1549": { + "node_id": "node_1549", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.45 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4498557344185, + "fos_buckling": 1.569097714957239, + "fos_yielding": 4.1549702721537685, + "deflection": 0.0014492028197449925, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_1548", + "improvement_over_parent": null + }, + "node_1550": { + "node_id": "node_1550", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1549", + "improvement_over_parent": null + }, + "node_1551": { + "node_id": "node_1551", + "content": "INITIAL DESIGN (Trace 226)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1552": { + "node_id": "node_1552", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 122.21 kg\n Factor of Safety: 0.05\n Max Deflection: 8.04e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 122.20749729598295, + "fos_buckling": 0.047999652287445294, + "fos_yielding": 1.1246316862579493, + "deflection": 0.008035080916821459, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001761)" + }, + "parent_node_id": "node_1551", + "improvement_over_parent": null + }, + "node_1553": { + "node_id": "node_1553", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n\nPerformance:\n Mass: 155.30 kg\n Factor of Safety: 1.06\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.29832330248453, + "fos_buckling": 1.0637929287959027, + "fos_yielding": 3.008350846134124, + "deflection": 0.0019644309409153774, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004279)" + }, + "parent_node_id": "node_1552", + "improvement_over_parent": null + }, + "node_1554": { + "node_id": "node_1554", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 164.82 kg\n Factor of Safety: 1.04\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.8189381088382, + "fos_buckling": 1.0436657886707286, + "fos_yielding": 2.951432344998416, + "deflection": 0.0019269770932546476, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002295)" + }, + "parent_node_id": "node_1553", + "improvement_over_parent": null + }, + "node_1555": { + "node_id": "node_1555", + "content": "MODIFICATION: Increase 6 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 166.40 kg\n Factor of Safety: 1.04\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.4006002031156, + "fos_buckling": 1.0439210080633037, + "fos_yielding": 2.9521540921118063, + "deflection": 0.0019243420810513396, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.264)" + }, + "parent_node_id": "node_1554", + "improvement_over_parent": null + }, + "node_1556": { + "node_id": "node_1556", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0028)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 192.08 kg\n Factor of Safety: 1.19\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.07657163638362, + "fos_buckling": 1.1874843000618678, + "fos_yielding": 3.413026674844967, + "deflection": 0.0016698330422965525, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_1555", + "improvement_over_parent": null + }, + "node_1557": { + "node_id": "node_1557", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0032)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 219.21 kg\n Factor of Safety: 1.33\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.20510083491868, + "fos_buckling": 1.3340199710720813, + "fos_yielding": 3.9019548226039387, + "deflection": 0.0014657037785410839, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_1556", + "improvement_over_parent": null + }, + "node_1558": { + "node_id": "node_1558", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1557", + "improvement_over_parent": null + }, + "node_1559": { + "node_id": "node_1559", + "content": "INITIAL DESIGN (Trace 227)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0015)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n\nPerformance:\n Mass: 76.93 kg\n Factor of Safety: 0.06\n Max Deflection: 1.12e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 76.93483881347753, + "fos_buckling": 0.061453312293173884, + "fos_yielding": 0.9364993711314507, + "deflection": 0.011248569142757242, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1560": { + "node_id": "node_1560", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 89.26 kg\n Factor of Safety: 0.07\n Max Deflection: 9.70e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 89.25911712778071, + "fos_buckling": 0.07042192810355373, + "fos_yielding": 1.0854752801106882, + "deflection": 0.009702026047273596, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_1559", + "improvement_over_parent": null + }, + "node_1561": { + "node_id": "node_1561", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 114.78 kg\n Factor of Safety: 0.09\n Max Deflection: 7.56e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.77600603380814, + "fos_buckling": 0.08822926081242108, + "fos_yielding": 1.3930058397833003, + "deflection": 0.00755568748297377, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.302)" + }, + "parent_node_id": "node_1560", + "improvement_over_parent": null + }, + "node_1562": { + "node_id": "node_1562", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 137.65 kg\n Factor of Safety: 0.94\n Max Deflection: 2.42e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.64604655875934, + "fos_buckling": 0.9353997656040395, + "fos_yielding": 2.678525908520662, + "deflection": 0.0024201589621019324, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002931)" + }, + "parent_node_id": "node_1561", + "improvement_over_parent": null + }, + "node_1563": { + "node_id": "node_1563", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 169.16 kg\n Factor of Safety: 1.13\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.16464409559205, + "fos_buckling": 1.1255352319703964, + "fos_yielding": 3.288113458452046, + "deflection": 0.0019720324543521656, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.245)" + }, + "parent_node_id": "node_1562", + "improvement_over_parent": null + }, + "node_1564": { + "node_id": "node_1564", + "content": "MODIFICATION: Increase 0 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 171.32 kg\n Factor of Safety: 1.13\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.32115378219123, + "fos_buckling": 1.1275015372953157, + "fos_yielding": 3.2966409299683264, + "deflection": 0.0019184881218983223, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.192)" + }, + "parent_node_id": "node_1563", + "improvement_over_parent": null + }, + "node_1565": { + "node_id": "node_1565", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 216.24 kg\n Factor of Safety: 1.38\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.24454286089144, + "fos_buckling": 1.3805595767815686, + "fos_yielding": 4.154985836435805, + "deflection": 0.0015234520719626722, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_1564", + "improvement_over_parent": null + }, + "node_1566": { + "node_id": "node_1566", + "content": "MODIFICATION: Increase 10 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22537371465484, + "fos_buckling": 1.5677330791382311, + "fos_yielding": 4.150989514805254, + "deflection": 0.0014507256454785518, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.215)" + }, + "parent_node_id": "node_1565", + "improvement_over_parent": null + }, + "node_1567": { + "node_id": "node_1567", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1566", + "improvement_over_parent": null + }, + "node_1568": { + "node_id": "node_1568", + "content": "INITIAL DESIGN (Trace 228)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 103.13 kg\n Factor of Safety: 0.27\n Max Deflection: 4.65e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.1286420450097, + "fos_buckling": 0.26773651241205465, + "fos_yielding": 1.466753307399633, + "deflection": 46524568765969.48, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1569": { + "node_id": "node_1569", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 107.24 kg\n Factor of Safety: 0.02\n Max Deflection: 2.29e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.23980233759426, + "fos_buckling": 0.016709174260038144, + "fos_yielding": 0.4634904186031721, + "deflection": 22877206903301.45, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001661)" + }, + "parent_node_id": "node_1568", + "improvement_over_parent": null + }, + "node_1570": { + "node_id": "node_1570", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 127.15 kg\n Factor of Safety: 0.08\n Max Deflection: 2.48e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.1523189635558, + "fos_buckling": 0.07638544215458631, + "fos_yielding": 1.1025534460480146, + "deflection": 24806929031094.242, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_1569", + "improvement_over_parent": null + }, + "node_1571": { + "node_id": "node_1571", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 160.94 kg\n Factor of Safety: 1.20\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.93556067674203, + "fos_buckling": 1.2026466397466204, + "fos_yielding": 3.323953464057151, + "deflection": 0.002039917515038298, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004431)" + }, + "parent_node_id": "node_1570", + "improvement_over_parent": null + }, + "node_1572": { + "node_id": "node_1572", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 163.75 kg\n Factor of Safety: 0.87\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.75174832785112, + "fos_buckling": 0.865035477832883, + "fos_yielding": 3.2671478536295133, + "deflection": 0.0019630527497188056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001529)" + }, + "parent_node_id": "node_1571", + "improvement_over_parent": null + }, + "node_1573": { + "node_id": "node_1573", + "content": "MODIFICATION: Increase 0 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 166.87 kg\n Factor of Safety: 1.12\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.87241357973954, + "fos_buckling": 1.1191712648172438, + "fos_yielding": 3.2797444128975837, + "deflection": 0.001882995658560191, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.302)" + }, + "parent_node_id": "node_1572", + "improvement_over_parent": null + }, + "node_1574": { + "node_id": "node_1574", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 210.80 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.79979319966887, + "fos_buckling": 1.340140492037039, + "fos_yielding": 4.139648136262459, + "deflection": 0.0014951474482751963, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.289)" + }, + "parent_node_id": "node_1573", + "improvement_over_parent": null + }, + "node_1575": { + "node_id": "node_1575", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.34815081976512, + "fos_buckling": 1.568754005840006, + "fos_yielding": 4.152748814993181, + "deflection": 0.0014497949823411077, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1574", + "improvement_over_parent": null + }, + "node_1576": { + "node_id": "node_1576", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1575", + "improvement_over_parent": null + }, + "node_1577": { + "node_id": "node_1577", + "content": "INITIAL DESIGN (Trace 229)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 89.25 kg\n Factor of Safety: 0.02\n Max Deflection: 4.20e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 89.249149036727, + "fos_buckling": 0.017479707600949614, + "fos_yielding": 0.2703169871072125, + "deflection": 41983942161538.8, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1578": { + "node_id": "node_1578", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 101.72 kg\n Factor of Safety: 0.16\n Max Deflection: 1.37e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 101.71575566433452, + "fos_buckling": 0.15799996422093013, + "fos_yielding": 2.1625358968577, + "deflection": 13734314949683.535, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.147)" + }, + "parent_node_id": "node_1577", + "improvement_over_parent": null + }, + "node_1579": { + "node_id": "node_1579", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n\nPerformance:\n Mass: 127.63 kg\n Factor of Safety: 0.98\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.62762329023428, + "fos_buckling": 0.9778053760845838, + "fos_yielding": 2.4981087596789577, + "deflection": 0.002458158206287202, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003301)" + }, + "parent_node_id": "node_1578", + "improvement_over_parent": null + }, + "node_1580": { + "node_id": "node_1580", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n\nPerformance:\n Mass: 156.24 kg\n Factor of Safety: 1.17\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.2377752877091, + "fos_buckling": 1.167648479014235, + "fos_yielding": 3.057100008149719, + "deflection": 0.002011948165994577, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_1579", + "improvement_over_parent": null + }, + "node_1581": { + "node_id": "node_1581", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 177.12 kg\n Factor of Safety: 1.30\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.1195059762654, + "fos_buckling": 1.2995152698102796, + "fos_yielding": 3.46485906546902, + "deflection": 0.001777274637804644, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_1580", + "improvement_over_parent": null + }, + "node_1582": { + "node_id": "node_1582", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.70 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.69890923538023, + "fos_buckling": 1.5226905228712615, + "fos_yielding": 4.198180380695797, + "deflection": 0.0014699453698616347, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_1581", + "improvement_over_parent": null + }, + "node_1583": { + "node_id": "node_1583", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3120138501409, + "fos_buckling": 1.5685144822324504, + "fos_yielding": 4.1529684800149, + "deflection": 0.001450183408377932, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1582", + "improvement_over_parent": null + }, + "node_1584": { + "node_id": "node_1584", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1583", + "improvement_over_parent": null + }, + "node_1585": { + "node_id": "node_1585", + "content": "INITIAL DESIGN (Trace 230)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 149.83 kg\n Factor of Safety: 0.74\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.82870177979967, + "fos_buckling": 0.7368361502085385, + "fos_yielding": 2.0315638276570582, + "deflection": 0.0021874765631028073, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1586": { + "node_id": "node_1586", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 194.63 kg\n Factor of Safety: 0.92\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.631399490503, + "fos_buckling": 0.919784703459702, + "fos_yielding": 2.6540726651260416, + "deflection": 0.001687063054698471, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.325)" + }, + "parent_node_id": "node_1585", + "improvement_over_parent": null + }, + "node_1587": { + "node_id": "node_1587", + "content": "MODIFICATION: Increase 10 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.27 kg\n Factor of Safety: 1.07\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.27376305837936, + "fos_buckling": 1.0742078336678142, + "fos_yielding": 2.646964104310403, + "deflection": 0.0016270902169060937, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.634)" + }, + "parent_node_id": "node_1586", + "improvement_over_parent": null + }, + "node_1588": { + "node_id": "node_1588", + "content": "MODIFICATION: Increase 4 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.35028694616182, + "fos_buckling": 1.569202311108893, + "fos_yielding": 4.150223619831357, + "deflection": 0.0014496745108149626, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.653)" + }, + "parent_node_id": "node_1587", + "improvement_over_parent": null + }, + "node_1589": { + "node_id": "node_1589", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1588", + "improvement_over_parent": null + }, + "node_1590": { + "node_id": "node_1590", + "content": "INITIAL DESIGN (Trace 231)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 162.93 kg\n Factor of Safety: 1.45\n Max Deflection: 8.57e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.93085295374152, + "fos_buckling": 1.4522942216712833, + "fos_yielding": 3.81963809304762, + "deflection": 8573580369403.033, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1591": { + "node_id": "node_1591", + "content": "MODIFICATION: Increase 1 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 166.78 kg\n Factor of Safety: 0.47\n Max Deflection: 5.07e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.78427580527918, + "fos_buckling": 0.47199521612190465, + "fos_yielding": 4.025707284303508, + "deflection": 5068159037556.479, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.309)" + }, + "parent_node_id": "node_1590", + "improvement_over_parent": null + }, + "node_1592": { + "node_id": "node_1592", + "content": "MODIFICATION: Increase 2 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 168.05 kg\n Factor of Safety: 0.26\n Max Deflection: 3.32e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.0541933828641, + "fos_buckling": 0.25747317551895854, + "fos_yielding": 4.1838571832396765, + "deflection": 3315737818251.3135, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.610)" + }, + "parent_node_id": "node_1591", + "improvement_over_parent": null + }, + "node_1593": { + "node_id": "node_1593", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 180.60 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.60255100296035, + "fos_buckling": 0.127884311792929, + "fos_yielding": 2.148219241400454, + "deflection": 0.004836715112370121, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1592", + "improvement_over_parent": null + }, + "node_1594": { + "node_id": "node_1594", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25451935433375, + "fos_buckling": 1.5681030588640603, + "fos_yielding": 4.151353029580505, + "deflection": 0.0014504634682890299, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1593", + "improvement_over_parent": null + }, + "node_1595": { + "node_id": "node_1595", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1594", + "improvement_over_parent": null + }, + "node_1596": { + "node_id": "node_1596", + "content": "INITIAL DESIGN (Trace 232)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 192.70 kg\n Factor of Safety: 1.35\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.7040822126958, + "fos_buckling": 1.3500300545055859, + "fos_yielding": 3.7467089845562622, + "deflection": 0.0017039998099387223, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1597": { + "node_id": "node_1597", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.21 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.2120686388828, + "fos_buckling": 1.484101206687187, + "fos_yielding": 4.201599362738235, + "deflection": 0.0015204374872192154, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_1596", + "improvement_over_parent": null + }, + "node_1598": { + "node_id": "node_1598", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 222.37 kg\n Factor of Safety: 1.50\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.36588337718064, + "fos_buckling": 1.4953997546521283, + "fos_yielding": 4.154741117165217, + "deflection": 0.0014520048949635189, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1597", + "improvement_over_parent": null + }, + "node_1599": { + "node_id": "node_1599", + "content": "MODIFICATION: Increase 2 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24698544925127, + "fos_buckling": 1.567961092515526, + "fos_yielding": 4.151168806763576, + "deflection": 0.001450502757025576, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.362)" + }, + "parent_node_id": "node_1598", + "improvement_over_parent": null + }, + "node_1600": { + "node_id": "node_1600", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1599", + "improvement_over_parent": null + }, + "node_1601": { + "node_id": "node_1601", + "content": "INITIAL DESIGN (Trace 233)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.82 kg\n Factor of Safety: 1.31\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.81540371016516, + "fos_buckling": 1.3121395526706767, + "fos_yielding": 3.3264948331712634, + "deflection": 0.0015366107751519894, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1602": { + "node_id": "node_1602", + "content": "MODIFICATION: Increase 7 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 206.89 kg\n Factor of Safety: 1.31\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.88883346678958, + "fos_buckling": 1.311966656098206, + "fos_yielding": 3.3260565112307146, + "deflection": 0.0015368563329661734, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.431)" + }, + "parent_node_id": "node_1601", + "improvement_over_parent": null + }, + "node_1603": { + "node_id": "node_1603", + "content": "MODIFICATION: Increase 7 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 208.24 kg\n Factor of Safety: 1.31\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.24407716271418, + "fos_buckling": 1.3118536713503413, + "fos_yielding": 3.32577007585939, + "deflection": 0.00153701683547589, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.205)" + }, + "parent_node_id": "node_1602", + "improvement_over_parent": null + }, + "node_1604": { + "node_id": "node_1604", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 211.80 kg\n Factor of Safety: 1.31\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.7984844984122, + "fos_buckling": 1.309003477599317, + "fos_yielding": 3.318544354504507, + "deflection": 0.0015337401393377545, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1603", + "improvement_over_parent": null + }, + "node_1605": { + "node_id": "node_1605", + "content": "MODIFICATION: Increase 1 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 215.98 kg\n Factor of Safety: 1.31\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.98451220678402, + "fos_buckling": 1.3077948423448027, + "fos_yielding": 3.315480260505399, + "deflection": 0.0014654250946450446, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.344)" + }, + "parent_node_id": "node_1604", + "improvement_over_parent": null + }, + "node_1606": { + "node_id": "node_1606", + "content": "MODIFICATION: Increase 4 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 217.54 kg\n Factor of Safety: 1.31\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.54383707974318, + "fos_buckling": 1.3069730465377678, + "fos_yielding": 3.3133968696797362, + "deflection": 0.0014621784088536764, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.287)" + }, + "parent_node_id": "node_1605", + "improvement_over_parent": null + }, + "node_1607": { + "node_id": "node_1607", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1606", + "improvement_over_parent": null + }, + "node_1608": { + "node_id": "node_1608", + "content": "INITIAL DESIGN (Trace 234)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 120.34 kg\n Factor of Safety: 0.57\n Max Deflection: 1.78e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.33944136289294, + "fos_buckling": 0.569273766142893, + "fos_yielding": 2.4840314555689753, + "deflection": 17837897429263.53, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1609": { + "node_id": "node_1609", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 144.82 kg\n Factor of Safety: 0.42\n Max Deflection: 5.82e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.822858683546, + "fos_buckling": 0.41687542980482706, + "fos_yielding": 3.7388396648574513, + "deflection": 5815256983568.843, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_1608", + "improvement_over_parent": null + }, + "node_1610": { + "node_id": "node_1610", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 181.57 kg\n Factor of Safety: 1.20\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.57282197069594, + "fos_buckling": 1.1958704703459424, + "fos_yielding": 3.568038203329482, + "deflection": 0.0017323992133282315, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004852)" + }, + "parent_node_id": "node_1609", + "improvement_over_parent": null + }, + "node_1611": { + "node_id": "node_1611", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.66 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.66421743397487, + "fos_buckling": 1.339040743996751, + "fos_yielding": 4.137413130527399, + "deflection": 0.0014961723233272424, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_1610", + "improvement_over_parent": null + }, + "node_1612": { + "node_id": "node_1612", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21257505407112, + "fos_buckling": 1.5677006211305144, + "fos_yielding": 4.150515891825119, + "deflection": 0.0014507549358125074, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1611", + "improvement_over_parent": null + }, + "node_1613": { + "node_id": "node_1613", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1612", + "improvement_over_parent": null + }, + "node_1614": { + "node_id": "node_1614", + "content": "INITIAL DESIGN (Trace 235)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 150.40 kg\n Factor of Safety: 0.97\n Max Deflection: 2.12e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.3968302571356, + "fos_buckling": 0.9716169627852491, + "fos_yielding": 2.7212865253517236, + "deflection": 0.002118152615974538, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1615": { + "node_id": "node_1615", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 170.71 kg\n Factor of Safety: 1.09\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.7087619316237, + "fos_buckling": 1.0904029618690534, + "fos_yielding": 3.092997837522925, + "deflection": 0.0018684147891421966, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.145)" + }, + "parent_node_id": "node_1614", + "improvement_over_parent": null + }, + "node_1616": { + "node_id": "node_1616", + "content": "MODIFICATION: Increase 5 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 176.36 kg\n Factor of Safety: 1.25\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.362947079653, + "fos_buckling": 1.2489739918614373, + "fos_yielding": 3.416560880826527, + "deflection": 0.0018680898055194954, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.319)" + }, + "parent_node_id": "node_1615", + "improvement_over_parent": null + }, + "node_1617": { + "node_id": "node_1617", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 181.36 kg\n Factor of Safety: 1.32\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.36462980549663, + "fos_buckling": 1.3202783418941095, + "fos_yielding": 3.3750530003608707, + "deflection": 0.0017807032814900507, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002048)" + }, + "parent_node_id": "node_1616", + "improvement_over_parent": null + }, + "node_1618": { + "node_id": "node_1618", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1559132997005, + "fos_buckling": 1.5674208468130004, + "fos_yielding": 4.149652574322825, + "deflection": 0.0014510419244131159, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.253)" + }, + "parent_node_id": "node_1617", + "improvement_over_parent": null + }, + "node_1619": { + "node_id": "node_1619", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1618", + "improvement_over_parent": null + }, + "node_1620": { + "node_id": "node_1620", + "content": "INITIAL DESIGN (Trace 236)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 123.60 kg\n Factor of Safety: 0.04\n Max Deflection: 4.23e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.60296580033253, + "fos_buckling": 0.03783333306992126, + "fos_yielding": 0.2703169871072125, + "deflection": 42297519993561.75, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1621": { + "node_id": "node_1621", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 146.87 kg\n Factor of Safety: 0.86\n Max Deflection: 2.21e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.8677332823537, + "fos_buckling": 0.8642353464452922, + "fos_yielding": 2.84255391929714, + "deflection": 0.0022077673063804126, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002984)" + }, + "parent_node_id": "node_1620", + "improvement_over_parent": null + }, + "node_1622": { + "node_id": "node_1622", + "content": "MODIFICATION: Increase 6 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 152.70 kg\n Factor of Safety: 0.86\n Max Deflection: 2.21e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.69934989952512, + "fos_buckling": 0.8642353464452922, + "fos_yielding": 2.84255391929714, + "deflection": 0.0022077673063804126, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.316)" + }, + "parent_node_id": "node_1621", + "improvement_over_parent": null + }, + "node_1623": { + "node_id": "node_1623", + "content": "MODIFICATION: Increase 4 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 158.31 kg\n Factor of Safety: 0.83\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.3088558119058, + "fos_buckling": 0.8300697491969405, + "fos_yielding": 3.483111503272464, + "deflection": 0.0021860170932662395, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.252)" + }, + "parent_node_id": "node_1622", + "improvement_over_parent": null + }, + "node_1624": { + "node_id": "node_1624", + "content": "MODIFICATION: Increase 7 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 165.43 kg\n Factor of Safety: 0.86\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.4271259224958, + "fos_buckling": 0.8635833748401707, + "fos_yielding": 3.502599447491537, + "deflection": 0.002078696221901633, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.258)" + }, + "parent_node_id": "node_1623", + "improvement_over_parent": null + }, + "node_1625": { + "node_id": "node_1625", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 176.04 kg\n Factor of Safety: 0.89\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.03872190029156, + "fos_buckling": 0.8857954369596253, + "fos_yielding": 3.5225648761059962, + "deflection": 0.0019439928754663967, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002579)" + }, + "parent_node_id": "node_1624", + "improvement_over_parent": null + }, + "node_1626": { + "node_id": "node_1626", + "content": "MODIFICATION: Increase 10 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0041)]\n\nPerformance:\n Mass: 181.57 kg\n Factor of Safety: 0.77\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.57475077470497, + "fos_buckling": 0.7743367199936473, + "fos_yielding": 3.525257779502246, + "deflection": 0.001925333957910641, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.592)" + }, + "parent_node_id": "node_1625", + "improvement_over_parent": null + }, + "node_1627": { + "node_id": "node_1627", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0049)]\n\nPerformance:\n Mass: 214.61 kg\n Factor of Safety: 0.89\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.60787904352296, + "fos_buckling": 0.8932343472741322, + "fos_yielding": 4.16438714272511, + "deflection": 0.001629382813724277, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_1626", + "improvement_over_parent": null + }, + "node_1628": { + "node_id": "node_1628", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1627", + "improvement_over_parent": null + }, + "node_1629": { + "node_id": "node_1629", + "content": "INITIAL DESIGN (Trace 237)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 110.45 kg\n Factor of Safety: 0.69\n Max Deflection: 2.98e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.45319577093193, + "fos_buckling": 0.6927796489729198, + "fos_yielding": 2.326249180732622, + "deflection": 0.0029796510496139833, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1630": { + "node_id": "node_1630", + "content": "MODIFICATION: Increase 0 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 112.56 kg\n Factor of Safety: 0.72\n Max Deflection: 2.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.56166238661348, + "fos_buckling": 0.717441972609373, + "fos_yielding": 2.3342267377426515, + "deflection": 0.00287281359002911, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.277)" + }, + "parent_node_id": "node_1629", + "improvement_over_parent": null + }, + "node_1631": { + "node_id": "node_1631", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 143.52 kg\n Factor of Safety: 0.90\n Max Deflection: 2.26e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.51770184416853, + "fos_buckling": 0.8964559346289452, + "fos_yielding": 2.9724255758559375, + "deflection": 0.0022564931693149215, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_1630", + "improvement_over_parent": null + }, + "node_1632": { + "node_id": "node_1632", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 152.52 kg\n Factor of Safety: 0.88\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.520798863777, + "fos_buckling": 0.8848129894300429, + "fos_yielding": 2.9882589457087936, + "deflection": 0.0021634700111449615, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002162)" + }, + "parent_node_id": "node_1631", + "improvement_over_parent": null + }, + "node_1633": { + "node_id": "node_1633", + "content": "MODIFICATION: Increase 5 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 153.70 kg\n Factor of Safety: 0.99\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.70121532212005, + "fos_buckling": 0.9890168332649505, + "fos_yielding": 2.983727412916294, + "deflection": 0.002150499255219527, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.389)" + }, + "parent_node_id": "node_1632", + "improvement_over_parent": null + }, + "node_1634": { + "node_id": "node_1634", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 192.90 kg\n Factor of Safety: 1.20\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.90131116948885, + "fos_buckling": 1.197107967710925, + "fos_yielding": 3.739575438882654, + "deflection": 0.0017166980648426861, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_1633", + "improvement_over_parent": null + }, + "node_1635": { + "node_id": "node_1635", + "content": "MODIFICATION: Increase 10 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0035)]\n\nPerformance:\n Mass: 195.74 kg\n Factor of Safety: 1.11\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.73846368908147, + "fos_buckling": 1.1059648555514112, + "fos_yielding": 3.740829407941082, + "deflection": 0.0017101565678132279, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.280)" + }, + "parent_node_id": "node_1634", + "improvement_over_parent": null + }, + "node_1636": { + "node_id": "node_1636", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0040)]\n\nPerformance:\n Mass: 217.85 kg\n Factor of Safety: 1.21\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.85367064173377, + "fos_buckling": 1.2072967703046429, + "fos_yielding": 4.161147770250909, + "deflection": 0.0015378869500136088, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.124)" + }, + "parent_node_id": "node_1635", + "improvement_over_parent": null + }, + "node_1637": { + "node_id": "node_1637", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1636", + "improvement_over_parent": null + }, + "node_1638": { + "node_id": "node_1638", + "content": "INITIAL DESIGN (Trace 238)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1639": { + "node_id": "node_1639", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 149.37 kg\n Factor of Safety: 0.08\n Max Deflection: 2.10e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.37175332376694, + "fos_buckling": 0.07529321632733474, + "fos_yielding": 1.1025534460480146, + "deflection": 20997294249740.97, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004927)" + }, + "parent_node_id": "node_1638", + "improvement_over_parent": null + }, + "node_1640": { + "node_id": "node_1640", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n\nPerformance:\n Mass: 152.32 kg\n Factor of Safety: 0.00\n Max Deflection: 3.64e+14 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.31939558685022, + "fos_buckling": 0.0013183187823667202, + "fos_yielding": 0.03789588748016257, + "deflection": 363931960908620.25, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001300)" + }, + "parent_node_id": "node_1639", + "improvement_over_parent": null + }, + "node_1641": { + "node_id": "node_1641", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 174.38 kg\n Factor of Safety: 0.84\n Max Deflection: 2.39e+13 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.37873526075862, + "fos_buckling": 0.8421853507531234, + "fos_yielding": 2.52820208567768, + "deflection": 23888885350435.82, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.159)" + }, + "parent_node_id": "node_1640", + "improvement_over_parent": null + }, + "node_1642": { + "node_id": "node_1642", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 177.93 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.93314259645663, + "fos_buckling": 0.06037702062985365, + "fos_yielding": 1.4761425203810572, + "deflection": 0.006101610999742817, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1641", + "improvement_over_parent": null + }, + "node_1643": { + "node_id": "node_1643", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 221.54 kg\n Factor of Safety: 1.38\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.54419683921734, + "fos_buckling": 1.3832898906297706, + "fos_yielding": 4.15147053864613, + "deflection": 0.0014547018443520768, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1642", + "improvement_over_parent": null + }, + "node_1644": { + "node_id": "node_1644", + "content": "MODIFICATION: Increase 3 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 224.59 kg\n Factor of Safety: 1.28\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 224.5864815712355, + "fos_buckling": 1.28298222810574, + "fos_yielding": 4.146135769872368, + "deflection": 0.0014485374791480769, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.577)" + }, + "parent_node_id": "node_1643", + "improvement_over_parent": null + }, + "node_1645": { + "node_id": "node_1645", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1644", + "improvement_over_parent": null + }, + "node_1646": { + "node_id": "node_1646", + "content": "INITIAL DESIGN (Trace 239)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 134.71 kg\n Factor of Safety: 1.01\n Max Deflection: 2.38e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.70786360316788, + "fos_buckling": 1.0051496263046447, + "fos_yielding": 2.5749259916734584, + "deflection": 0.002384705059364517, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1647": { + "node_id": "node_1647", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n\nPerformance:\n Mass: 136.38 kg\n Factor of Safety: 1.02\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.38174967229588, + "fos_buckling": 1.0150000229621738, + "fos_yielding": 2.551162616938259, + "deflection": 0.0023549917706182787, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000883)" + }, + "parent_node_id": "node_1646", + "improvement_over_parent": null + }, + "node_1648": { + "node_id": "node_1648", + "content": "MODIFICATION: Increase 2 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n\nPerformance:\n Mass: 137.32 kg\n Factor of Safety: 1.03\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.32169605307206, + "fos_buckling": 1.0332575474537595, + "fos_yielding": 2.551573950301121, + "deflection": 0.0023511157733680775, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.318)" + }, + "parent_node_id": "node_1647", + "improvement_over_parent": null + }, + "node_1649": { + "node_id": "node_1649", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 174.72 kg\n Factor of Safety: 1.27\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.71608494992523, + "fos_buckling": 1.2672632425132857, + "fos_yielding": 3.2446134274713287, + "deflection": 0.0018521175867949255, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_1648", + "improvement_over_parent": null + }, + "node_1650": { + "node_id": "node_1650", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0027)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 193.59 kg\n Factor of Safety: 1.38\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.5945302124469, + "fos_buckling": 1.3783010145822747, + "fos_yielding": 3.5942104997099555, + "deflection": 0.00167342164556064, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.117)" + }, + "parent_node_id": "node_1649", + "improvement_over_parent": null + }, + "node_1651": { + "node_id": "node_1651", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 223.71 kg\n Factor of Safety: 1.55\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.7105601856115, + "fos_buckling": 1.5459013060716766, + "fos_yielding": 4.151523823756913, + "deflection": 0.0014507817501114722, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_1650", + "improvement_over_parent": null + }, + "node_1652": { + "node_id": "node_1652", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1651", + "improvement_over_parent": null + }, + "node_1653": { + "node_id": "node_1653", + "content": "INITIAL DESIGN (Trace 240)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1654": { + "node_id": "node_1654", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 218.08 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.08421434285307, + "fos_buckling": 1.3239241119160554, + "fos_yielding": 4.137601388506008, + "deflection": 0.0014966342472169118, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1653", + "improvement_over_parent": null + }, + "node_1655": { + "node_id": "node_1655", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n\nPerformance:\n Mass: 221.35 kg\n Factor of Safety: 1.35\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.35171066520627, + "fos_buckling": 1.3536572430928462, + "fos_yielding": 4.14977023280557, + "deflection": 0.0014555890895281893, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001449)" + }, + "parent_node_id": "node_1654", + "improvement_over_parent": null + }, + "node_1656": { + "node_id": "node_1656", + "content": "MODIFICATION: Increase 3 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0100)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n\nPerformance:\n Mass: 240.40 kg\n Factor of Safety: 0.87\n Max Deflection: 1.43e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 240.40475896027345, + "fos_buckling": 0.8683338437269748, + "fos_yielding": 4.82355770958256, + "deflection": 0.0014346418620949347, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.639)" + }, + "parent_node_id": "node_1655", + "improvement_over_parent": null + }, + "node_1657": { + "node_id": "node_1657", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1656", + "improvement_over_parent": null + }, + "node_1658": { + "node_id": "node_1658", + "content": "INITIAL DESIGN (Trace 241)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 198.50 kg\n Factor of Safety: 1.16\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.5036746820092, + "fos_buckling": 1.1612011254296288, + "fos_yielding": 2.8907703410620202, + "deflection": 0.0015807777942078109, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1659": { + "node_id": "node_1659", + "content": "MODIFICATION: Increase 4 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 209.45 kg\n Factor of Safety: 1.31\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.452685918327, + "fos_buckling": 1.3139343581363294, + "fos_yielding": 4.154253180727951, + "deflection": 0.0015569141288428786, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.499)" + }, + "parent_node_id": "node_1658", + "improvement_over_parent": null + }, + "node_1660": { + "node_id": "node_1660", + "content": "MODIFICATION: Increase 10 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.05 kg\n Factor of Safety: 1.42\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.04524201547142, + "fos_buckling": 1.4192550670075181, + "fos_yielding": 4.150248510309335, + "deflection": 0.0014595476825593797, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.277)" + }, + "parent_node_id": "node_1659", + "improvement_over_parent": null + }, + "node_1661": { + "node_id": "node_1661", + "content": "MODIFICATION: Increase 9 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.32 kg\n Factor of Safety: 1.49\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.32384299884833, + "fos_buckling": 1.4896817106973559, + "fos_yielding": 4.152176057341712, + "deflection": 0.0014520519298292921, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.567)" + }, + "parent_node_id": "node_1660", + "improvement_over_parent": null + }, + "node_1662": { + "node_id": "node_1662", + "content": "MODIFICATION: Increase 2 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23643490129777, + "fos_buckling": 1.568008591908919, + "fos_yielding": 4.1484623238865215, + "deflection": 0.0014504884988882634, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.379)" + }, + "parent_node_id": "node_1661", + "improvement_over_parent": null + }, + "node_1663": { + "node_id": "node_1663", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1662", + "improvement_over_parent": null + }, + "node_1664": { + "node_id": "node_1664", + "content": "INITIAL DESIGN (Trace 242)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n\nPerformance:\n Mass: 119.64 kg\n Factor of Safety: 0.70\n Max Deflection: 2.71e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.63800605672677, + "fos_buckling": 0.7028354858103754, + "fos_yielding": 2.484472437976439, + "deflection": 0.002713554702146303, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1665": { + "node_id": "node_1665", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 138.62 kg\n Factor of Safety: 0.80\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.62267627620665, + "fos_buckling": 0.8003963374759923, + "fos_yielding": 2.8769291296398696, + "deflection": 0.0023439456909608086, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_1664", + "improvement_over_parent": null + }, + "node_1666": { + "node_id": "node_1666", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 172.25 kg\n Factor of Safety: 0.96\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.25299036391726, + "fos_buckling": 0.9641819426122746, + "fos_yielding": 3.570826779995423, + "deflection": 0.0018891459926118077, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.261)" + }, + "parent_node_id": "node_1665", + "improvement_over_parent": null + }, + "node_1667": { + "node_id": "node_1667", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 202.51 kg\n Factor of Safety: 1.10\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.5057076922903, + "fos_buckling": 1.1018364296031593, + "fos_yielding": 4.193519278591311, + "deflection": 0.001609036260042825, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_1666", + "improvement_over_parent": null + }, + "node_1668": { + "node_id": "node_1668", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 211.12 kg\n Factor of Safety: 1.15\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.11881230705094, + "fos_buckling": 1.1491911214189208, + "fos_yielding": 4.156223150290052, + "deflection": 0.0015940038897182254, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1667", + "improvement_over_parent": null + }, + "node_1669": { + "node_id": "node_1669", + "content": "MODIFICATION: Increase 10 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0037)]\n\nPerformance:\n Mass: 214.33 kg\n Factor of Safety: 1.15\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.33381725349807, + "fos_buckling": 1.1549196595596447, + "fos_yielding": 4.150483639662384, + "deflection": 0.0015921231214615398, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.429)" + }, + "parent_node_id": "node_1668", + "improvement_over_parent": null + }, + "node_1670": { + "node_id": "node_1670", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1669", + "improvement_over_parent": null + }, + "node_1671": { + "node_id": "node_1671", + "content": "INITIAL DESIGN (Trace 243)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 136.41 kg\n Factor of Safety: 1.02\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.4093791122872, + "fos_buckling": 1.0180905740231783, + "fos_yielding": 2.737055450726299, + "deflection": 0.0024083553188378845, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1672": { + "node_id": "node_1672", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 139.79 kg\n Factor of Safety: 1.03\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.7897568921338, + "fos_buckling": 1.026412242092247, + "fos_yielding": 2.7439915030276802, + "deflection": 0.0024097696933761516, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001502)" + }, + "parent_node_id": "node_1671", + "improvement_over_parent": null + }, + "node_1673": { + "node_id": "node_1673", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 143.81 kg\n Factor of Safety: 0.96\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.80976291069533, + "fos_buckling": 0.9621496385548478, + "fos_yielding": 2.7077435627506583, + "deflection": 0.002285807226258342, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001622)" + }, + "parent_node_id": "node_1672", + "improvement_over_parent": null + }, + "node_1674": { + "node_id": "node_1674", + "content": "MODIFICATION: Increase 0 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 145.86 kg\n Factor of Safety: 1.09\n Max Deflection: 2.21e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.86422144104665, + "fos_buckling": 1.0937127318313233, + "fos_yielding": 2.7160530948782298, + "deflection": 0.002209265761697172, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.225)" + }, + "parent_node_id": "node_1673", + "improvement_over_parent": null + }, + "node_1675": { + "node_id": "node_1675", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 187.92 kg\n Factor of Safety: 1.36\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.92055436808525, + "fos_buckling": 1.3604703471493156, + "fos_yielding": 3.496529183778834, + "deflection": 0.0017193955408374352, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_1674", + "improvement_over_parent": null + }, + "node_1676": { + "node_id": "node_1676", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.16842055305776, + "fos_buckling": 1.567521348345345, + "fos_yielding": 4.149751204127425, + "deflection": 0.0014510474150296107, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.206)" + }, + "parent_node_id": "node_1675", + "improvement_over_parent": null + }, + "node_1677": { + "node_id": "node_1677", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1676", + "improvement_over_parent": null + }, + "node_1678": { + "node_id": "node_1678", + "content": "INITIAL DESIGN (Trace 244)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 155.46 kg\n Factor of Safety: 1.06\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.46137673574586, + "fos_buckling": 1.059590412200922, + "fos_yielding": 2.6085333879972623, + "deflection": 0.0019665271378561133, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1679": { + "node_id": "node_1679", + "content": "MODIFICATION: Increase 2 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 156.01 kg\n Factor of Safety: 1.06\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.01066335140038, + "fos_buckling": 1.0595534001133968, + "fos_yielding": 2.60844227046264, + "deflection": 0.001966640512919707, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.264)" + }, + "parent_node_id": "node_1678", + "improvement_over_parent": null + }, + "node_1680": { + "node_id": "node_1680", + "content": "MODIFICATION: Increase 7 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 158.26 kg\n Factor of Safety: 1.06\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.2585313994798, + "fos_buckling": 1.0595534001133968, + "fos_yielding": 2.60844227046264, + "deflection": 0.0019681711308327174, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.318)" + }, + "parent_node_id": "node_1679", + "improvement_over_parent": null + }, + "node_1681": { + "node_id": "node_1681", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 165.00 kg\n Factor of Safety: 1.05\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.9971903478715, + "fos_buckling": 1.0525404238772602, + "fos_yielding": 2.5911775024442174, + "deflection": 0.0019294292543835473, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001965)" + }, + "parent_node_id": "node_1680", + "improvement_over_parent": null + }, + "node_1682": { + "node_id": "node_1682", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 169.05 kg\n Factor of Safety: 1.06\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.0450257320086, + "fos_buckling": 1.0562352327166016, + "fos_yielding": 2.6002735003965483, + "deflection": 0.001866855716805378, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001820)" + }, + "parent_node_id": "node_1681", + "improvement_over_parent": null + }, + "node_1683": { + "node_id": "node_1683", + "content": "MODIFICATION: Increase 4 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0025)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 170.27 kg\n Factor of Safety: 1.06\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.2711706960309, + "fos_buckling": 1.0555621961931887, + "fos_yielding": 2.598616597670317, + "deflection": 0.0018625040172151747, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.279)" + }, + "parent_node_id": "node_1682", + "improvement_over_parent": null + }, + "node_1684": { + "node_id": "node_1684", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 217.67 kg\n Factor of Safety: 1.31\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.66701535420646, + "fos_buckling": 1.3138381633947367, + "fos_yielding": 3.3337226524844796, + "deflection": 0.001461820746097494, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.305)" + }, + "parent_node_id": "node_1683", + "improvement_over_parent": null + }, + "node_1685": { + "node_id": "node_1685", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1684", + "improvement_over_parent": null + }, + "node_1686": { + "node_id": "node_1686", + "content": "INITIAL DESIGN (Trace 245)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 212.49 kg\n Factor of Safety: 1.46\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.488939550989, + "fos_buckling": 1.4573534307106653, + "fos_yielding": 4.195651391301074, + "deflection": 0.001552671992766838, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1687": { + "node_id": "node_1687", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 216.04 kg\n Factor of Safety: 1.46\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.043346886687, + "fos_buckling": 1.4568068559521117, + "fos_yielding": 4.144815532675499, + "deflection": 0.0015004162210205953, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1686", + "improvement_over_parent": null + }, + "node_1688": { + "node_id": "node_1688", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 221.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.21768976341568, + "fos_buckling": 1.5693340214361464, + "fos_yielding": 4.15709501810587, + "deflection": 0.0014527509228919018, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1687", + "improvement_over_parent": null + }, + "node_1689": { + "node_id": "node_1689", + "content": "MODIFICATION: Increase 8 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0076)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 233.95 kg\n Factor of Safety: 1.57\n Max Deflection: 1.36e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 233.95225650136112, + "fos_buckling": 1.5728976138827633, + "fos_yielding": 4.152707556186076, + "deflection": 0.0013639373856227735, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.340)" + }, + "parent_node_id": "node_1688", + "improvement_over_parent": null + }, + "node_1690": { + "node_id": "node_1690", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1689", + "improvement_over_parent": null + }, + "node_1691": { + "node_id": "node_1691", + "content": "INITIAL DESIGN (Trace 246)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 129.04 kg\n Factor of Safety: 0.05\n Max Deflection: 9.38e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.03675910895322, + "fos_buckling": 0.04708111849076728, + "fos_yielding": 0.9825636847060645, + "deflection": 0.009377866363233477, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1692": { + "node_id": "node_1692", + "content": "MODIFICATION: Increase 1 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 131.78 kg\n Factor of Safety: 0.05\n Max Deflection: 9.26e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.77939694655157, + "fos_buckling": 0.04706739370849564, + "fos_yielding": 0.9822772541140797, + "deflection": 0.009264768887631149, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.285)" + }, + "parent_node_id": "node_1691", + "improvement_over_parent": null + }, + "node_1693": { + "node_id": "node_1693", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 146.10 kg\n Factor of Safety: 0.05\n Max Deflection: 8.36e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.10247650039105, + "fos_buckling": 0.05140205605309385, + "fos_yielding": 1.0900994791028888, + "deflection": 0.008356064275317722, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.117)" + }, + "parent_node_id": "node_1692", + "improvement_over_parent": null + }, + "node_1694": { + "node_id": "node_1694", + "content": "MODIFICATION: Increase 7 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 147.84 kg\n Factor of Safety: 0.05\n Max Deflection: 7.40e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.84456010336882, + "fos_buckling": 0.05139254958428354, + "fos_yielding": 1.2176500680068554, + "deflection": 0.007404000631776413, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.351)" + }, + "parent_node_id": "node_1693", + "improvement_over_parent": null + }, + "node_1695": { + "node_id": "node_1695", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.49 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.4865757992373, + "fos_buckling": 0.06033528570327624, + "fos_yielding": 1.4749327640809868, + "deflection": 0.006109581024447015, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.235)" + }, + "parent_node_id": "node_1694", + "improvement_over_parent": null + }, + "node_1696": { + "node_id": "node_1696", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.10 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.097630041998, + "fos_buckling": 1.5670813310609335, + "fos_yielding": 4.1481008511613275, + "deflection": 0.0014514133775224262, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1695", + "improvement_over_parent": null + }, + "node_1697": { + "node_id": "node_1697", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1696", + "improvement_over_parent": null + }, + "node_1698": { + "node_id": "node_1698", + "content": "INITIAL DESIGN (Trace 247)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 147.44 kg\n Factor of Safety: 0.08\n Max Deflection: 7.39e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.44315629861683, + "fos_buckling": 0.07918348838252036, + "fos_yielding": 1.2351934626857033, + "deflection": 0.007385118106315167, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1699": { + "node_id": "node_1699", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 167.56 kg\n Factor of Safety: 0.09\n Max Deflection: 6.49e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.5610087291503, + "fos_buckling": 0.08897757925308984, + "fos_yielding": 1.4070005880288607, + "deflection": 0.00648915640717544, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.149)" + }, + "parent_node_id": "node_1698", + "improvement_over_parent": null + }, + "node_1700": { + "node_id": "node_1700", + "content": "MODIFICATION: Increase 6 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 174.09 kg\n Factor of Safety: 0.09\n Max Deflection: 6.32e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.0880102341882, + "fos_buckling": 0.08897757925308981, + "fos_yielding": 1.4070005880288603, + "deflection": 0.006321742475694399, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.300)" + }, + "parent_node_id": "node_1699", + "improvement_over_parent": null + }, + "node_1701": { + "node_id": "node_1701", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.74 kg\n Factor of Safety: 1.54\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 216.7399785855616, + "fos_buckling": 1.5383782026330728, + "fos_yielding": 4.146772315611056, + "deflection": 0.0014620752967738004, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1700", + "improvement_over_parent": null + }, + "node_1702": { + "node_id": "node_1702", + "content": "MODIFICATION: Increase 9 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.39 kg\n Factor of Safety: 1.38\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.39365517782187, + "fos_buckling": 1.3842108662559673, + "fos_yielding": 4.148616585716405, + "deflection": 0.001455487985367384, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.647)" + }, + "parent_node_id": "node_1701", + "improvement_over_parent": null + }, + "node_1703": { + "node_id": "node_1703", + "content": "MODIFICATION: Increase 3 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.17598315002363, + "fos_buckling": 1.5678857905424337, + "fos_yielding": 4.150047500121498, + "deflection": 0.001450803692667078, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.577)" + }, + "parent_node_id": "node_1702", + "improvement_over_parent": null + }, + "node_1704": { + "node_id": "node_1704", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1703", + "improvement_over_parent": null + }, + "node_1705": { + "node_id": "node_1705", + "content": "INITIAL DESIGN (Trace 248)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 153.94 kg\n Factor of Safety: 0.87\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.9396691398643, + "fos_buckling": 0.8662238082162812, + "fos_yielding": 2.9574413441785334, + "deflection": 0.0021461105597683117, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1706": { + "node_id": "node_1706", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 171.32 kg\n Factor of Safety: 0.95\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.32366398385955, + "fos_buckling": 0.9480170768720714, + "fos_yielding": 3.2896624566856776, + "deflection": 0.001929983975195621, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.121)" + }, + "parent_node_id": "node_1705", + "improvement_over_parent": null + }, + "node_1707": { + "node_id": "node_1707", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.17 kg\n Factor of Safety: 1.14\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.16803235306998, + "fos_buckling": 1.1408339152696223, + "fos_yielding": 4.125865618458556, + "deflection": 0.0015399575897769272, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.280)" + }, + "parent_node_id": "node_1706", + "improvement_over_parent": null + }, + "node_1708": { + "node_id": "node_1708", + "content": "MODIFICATION: Increase 7 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.09 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.08882911604417, + "fos_buckling": 1.5671305073652761, + "fos_yielding": 4.14845467825192, + "deflection": 0.0014515742049884814, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.244)" + }, + "parent_node_id": "node_1707", + "improvement_over_parent": null + }, + "node_1709": { + "node_id": "node_1709", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1708", + "improvement_over_parent": null + }, + "node_1710": { + "node_id": "node_1710", + "content": "INITIAL DESIGN (Trace 249)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 136.08 kg\n Factor of Safety: 0.11\n Max Deflection: 6.43e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.0801310217661, + "fos_buckling": 0.10914392859331662, + "fos_yielding": 1.668942124603609, + "deflection": 0.00642635570159101, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1711": { + "node_id": "node_1711", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 165.17 kg\n Factor of Safety: 0.13\n Max Deflection: 5.30e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.17170474921642, + "fos_buckling": 0.1279861289540159, + "fos_yielding": 2.0322767377927384, + "deflection": 0.0053010310911742065, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_1710", + "improvement_over_parent": null + }, + "node_1712": { + "node_id": "node_1712", + "content": "MODIFICATION: Increase 4 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 173.66 kg\n Factor of Safety: 0.13\n Max Deflection: 5.31e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.66245005792817, + "fos_buckling": 0.12798612895401576, + "fos_yielding": 1.970621213022839, + "deflection": 0.005312528417444109, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.351)" + }, + "parent_node_id": "node_1711", + "improvement_over_parent": null + }, + "node_1713": { + "node_id": "node_1713", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.31 kg\n Factor of Safety: 1.23\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.31441840930157, + "fos_buckling": 1.229870326474443, + "fos_yielding": 4.13682614834601, + "deflection": 0.0015488279679095008, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1712", + "improvement_over_parent": null + }, + "node_1714": { + "node_id": "node_1714", + "content": "MODIFICATION: Increase 5 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.36 kg\n Factor of Safety: 1.15\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.35890972365087, + "fos_buckling": 1.1510710687523211, + "fos_yielding": 4.129389966249702, + "deflection": 0.0015379634084749132, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.546)" + }, + "parent_node_id": "node_1713", + "improvement_over_parent": null + }, + "node_1715": { + "node_id": "node_1715", + "content": "MODIFICATION: Increase 0 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21660453051373, + "fos_buckling": 1.5680272785904599, + "fos_yielding": 4.151403277653693, + "deflection": 0.001450826704853923, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.408)" + }, + "parent_node_id": "node_1714", + "improvement_over_parent": null + }, + "node_1716": { + "node_id": "node_1716", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1715", + "improvement_over_parent": null + }, + "node_1717": { + "node_id": "node_1717", + "content": "INITIAL DESIGN (Trace 250)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 168.38 kg\n Factor of Safety: 1.19\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.3799524932414, + "fos_buckling": 1.186776285620184, + "fos_yielding": 3.3393723501250294, + "deflection": 0.0018968208401434334, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1718": { + "node_id": "node_1718", + "content": "MODIFICATION: Increase 1 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 170.73 kg\n Factor of Safety: 1.26\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.72698646556972, + "fos_buckling": 1.260459400215536, + "fos_yielding": 3.3393723501250294, + "deflection": 0.0018427811690618413, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.217)" + }, + "parent_node_id": "node_1717", + "improvement_over_parent": null + }, + "node_1719": { + "node_id": "node_1719", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 177.58 kg\n Factor of Safety: 1.30\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.57734154850294, + "fos_buckling": 1.296763799540268, + "fos_yielding": 3.3045060709604015, + "deflection": 0.0018182621085996462, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002000)" + }, + "parent_node_id": "node_1718", + "improvement_over_parent": null + }, + "node_1720": { + "node_id": "node_1720", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.19 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1925326284777, + "fos_buckling": 1.5675488418028738, + "fos_yielding": 4.149972049627841, + "deflection": 0.0014508188999532191, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.282)" + }, + "parent_node_id": "node_1719", + "improvement_over_parent": null + }, + "node_1721": { + "node_id": "node_1721", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1720", + "improvement_over_parent": null + }, + "node_1722": { + "node_id": "node_1722", + "content": "INITIAL DESIGN (Trace 251)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 133.08 kg\n Factor of Safety: 1.00\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 133.07603637478266, + "fos_buckling": 1.0044308116742993, + "fos_yielding": 2.5131263382543523, + "deflection": 0.0024615947032025475, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1723": { + "node_id": "node_1723", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 157.09 kg\n Factor of Safety: 1.16\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.09319784749664, + "fos_buckling": 1.1599686156215556, + "fos_yielding": 2.965036881518301, + "deflection": 0.002088006903254699, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_1722", + "improvement_over_parent": null + }, + "node_1724": { + "node_id": "node_1724", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 194.11 kg\n Factor of Safety: 1.38\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.10529610732266, + "fos_buckling": 1.3824319941248715, + "fos_yielding": 3.660439439150888, + "deflection": 0.001693271408635278, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_1723", + "improvement_over_parent": null + }, + "node_1725": { + "node_id": "node_1725", + "content": "MODIFICATION: Increase 1 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 196.65 kg\n Factor of Safety: 1.41\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.6547455555857, + "fos_buckling": 1.4130878655896337, + "fos_yielding": 3.658292312792544, + "deflection": 0.001643856933630807, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.214)" + }, + "parent_node_id": "node_1724", + "improvement_over_parent": null + }, + "node_1726": { + "node_id": "node_1726", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32266694029536, + "fos_buckling": 1.5683000287563122, + "fos_yielding": 4.152409085666475, + "deflection": 0.0014499908787475126, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.149)" + }, + "parent_node_id": "node_1725", + "improvement_over_parent": null + }, + "node_1727": { + "node_id": "node_1727", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1726", + "improvement_over_parent": null + }, + "node_1728": { + "node_id": "node_1728", + "content": "INITIAL DESIGN (Trace 252)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0018)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 106.31 kg\n Factor of Safety: 0.10\n Max Deflection: 7.58e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.31458256858318, + "fos_buckling": 0.09603125061991173, + "fos_yielding": 1.5327684931149381, + "deflection": 0.007581812221755342, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1729": { + "node_id": "node_1729", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 122.93 kg\n Factor of Safety: 0.11\n Max Deflection: 6.56e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 122.92902206959208, + "fos_buckling": 0.1087194039477416, + "fos_yielding": 1.768622473613322, + "deflection": 0.00656168896764283, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_1728", + "improvement_over_parent": null + }, + "node_1730": { + "node_id": "node_1730", + "content": "MODIFICATION: Increase 1 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 125.93 kg\n Factor of Safety: 0.11\n Max Deflection: 6.56e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.92934783001489, + "fos_buckling": 0.1086846946132188, + "fos_yielding": 1.768057830073603, + "deflection": 0.006562938088565844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.284)" + }, + "parent_node_id": "node_1729", + "improvement_over_parent": null + }, + "node_1731": { + "node_id": "node_1731", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 160.87 kg\n Factor of Safety: 0.65\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.86623016042824, + "fos_buckling": 0.6480620063866738, + "fos_yielding": 3.3849907530121555, + "deflection": 0.002454603938672845, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004594)" + }, + "parent_node_id": "node_1730", + "improvement_over_parent": null + }, + "node_1732": { + "node_id": "node_1732", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 196.52 kg\n Factor of Safety: 0.79\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.52418059993795, + "fos_buckling": 0.7853017168085943, + "fos_yielding": 4.161681566690221, + "deflection": 0.0020058996133886634, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.242)" + }, + "parent_node_id": "node_1731", + "improvement_over_parent": null + }, + "node_1733": { + "node_id": "node_1733", + "content": "MODIFICATION: Increase 6 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 207.77 kg\n Factor of Safety: 1.16\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.77028944166892, + "fos_buckling": 1.1635001717597624, + "fos_yielding": 4.194048771547839, + "deflection": 0.0016479502274000363, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.585)" + }, + "parent_node_id": "node_1732", + "improvement_over_parent": null + }, + "node_1734": { + "node_id": "node_1734", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 211.32 kg\n Factor of Safety: 0.93\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.32469677736694, + "fos_buckling": 0.9277239181360514, + "fos_yielding": 4.112882245631506, + "deflection": 0.0015977812990499234, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1733", + "improvement_over_parent": null + }, + "node_1735": { + "node_id": "node_1735", + "content": "MODIFICATION: Increase 7 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.40 kg\n Factor of Safety: 0.82\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.40259809082139, + "fos_buckling": 0.8212624964412074, + "fos_yielding": 4.101922970917055, + "deflection": 0.0015916137354089705, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.410)" + }, + "parent_node_id": "node_1734", + "improvement_over_parent": null + }, + "node_1736": { + "node_id": "node_1736", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1735", + "improvement_over_parent": null + }, + "node_1737": { + "node_id": "node_1737", + "content": "INITIAL DESIGN (Trace 253)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 203.98 kg\n Factor of Safety: 1.09\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.98236840981707, + "fos_buckling": 1.0920161700134632, + "fos_yielding": 3.105228223879832, + "deflection": 0.0016115456306196275, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1738": { + "node_id": "node_1738", + "content": "MODIFICATION: Increase 8 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 206.29 kg\n Factor of Safety: 1.09\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.28765941084043, + "fos_buckling": 1.092392473161716, + "fos_yielding": 3.106298269533712, + "deflection": 0.0016087013739163223, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.401)" + }, + "parent_node_id": "node_1737", + "improvement_over_parent": null + }, + "node_1739": { + "node_id": "node_1739", + "content": "MODIFICATION: Increase 6 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.24 kg\n Factor of Safety: 1.24\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.24449518386967, + "fos_buckling": 1.2423532205648578, + "fos_yielding": 4.157680667783114, + "deflection": 0.0015638718281323252, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.616)" + }, + "parent_node_id": "node_1738", + "improvement_over_parent": null + }, + "node_1740": { + "node_id": "node_1740", + "content": "MODIFICATION: Increase 1 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2787813950702, + "fos_buckling": 1.5681692540213306, + "fos_yielding": 4.151359786402836, + "deflection": 0.0014504374209562483, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.575)" + }, + "parent_node_id": "node_1739", + "improvement_over_parent": null + }, + "node_1741": { + "node_id": "node_1741", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1740", + "improvement_over_parent": null + }, + "node_1742": { + "node_id": "node_1742", + "content": "INITIAL DESIGN (Trace 254)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1743": { + "node_id": "node_1743", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 147.50 kg\n Factor of Safety: 0.22\n Max Deflection: 4.45e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.4974870723861, + "fos_buckling": 0.21553321334085213, + "fos_yielding": 3.743431604089297, + "deflection": 4450678670305.368, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002748)" + }, + "parent_node_id": "node_1742", + "improvement_over_parent": null + }, + "node_1744": { + "node_id": "node_1744", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 164.64 kg\n Factor of Safety: 0.04\n Max Deflection: 3.23e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.63787128994736, + "fos_buckling": 0.03680850016245716, + "fos_yielding": 0.5512767230240074, + "deflection": 32326280059259.13, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_1743", + "improvement_over_parent": null + }, + "node_1745": { + "node_id": "node_1745", + "content": "MODIFICATION: Increase 6 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 175.45 kg\n Factor of Safety: 0.00\n Max Deflection: 9.74e+15 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.4535709937086, + "fos_buckling": 8.637441296116407e-05, + "fos_yielding": 0.002111851461775098, + "deflection": 9743797417849012.0, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.362)" + }, + "parent_node_id": "node_1744", + "improvement_over_parent": null + }, + "node_1746": { + "node_id": "node_1746", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.11 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.105539345082, + "fos_buckling": 1.3233954900456828, + "fos_yielding": 4.138302294991591, + "deflection": 0.0014965541500884332, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1745", + "improvement_over_parent": null + }, + "node_1747": { + "node_id": "node_1747", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27988222181068, + "fos_buckling": 1.5681071120009697, + "fos_yielding": 4.152047087862249, + "deflection": 0.001450357705276651, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1746", + "improvement_over_parent": null + }, + "node_1748": { + "node_id": "node_1748", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1747", + "improvement_over_parent": null + }, + "node_1749": { + "node_id": "node_1749", + "content": "INITIAL DESIGN (Trace 255)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 172.44 kg\n Factor of Safety: 0.13\n Max Deflection: 5.00e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.4429357303584, + "fos_buckling": 0.12799492501318535, + "fos_yielding": 2.1500773383380416, + "deflection": 0.0049986506273576765, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1750": { + "node_id": "node_1750", + "content": "MODIFICATION: Increase 8 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 174.36 kg\n Factor of Safety: 0.13\n Max Deflection: 5.00e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.35948892045747, + "fos_buckling": 0.12796892668107276, + "fos_yielding": 2.149640614579626, + "deflection": 0.004999456327757321, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.314)" + }, + "parent_node_id": "node_1749", + "improvement_over_parent": null + }, + "node_1751": { + "node_id": "node_1751", + "content": "MODIFICATION: Increase 0 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 180.62 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.61546690540118, + "fos_buckling": 0.1278841368541721, + "fos_yielding": 2.1482163027538106, + "deflection": 0.0048366246782619495, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.587)" + }, + "parent_node_id": "node_1750", + "improvement_over_parent": null + }, + "node_1752": { + "node_id": "node_1752", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26743525677458, + "fos_buckling": 1.568084112035204, + "fos_yielding": 4.151340987748536, + "deflection": 0.0014503814253800523, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1751", + "improvement_over_parent": null + }, + "node_1753": { + "node_id": "node_1753", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1752", + "improvement_over_parent": null + }, + "node_1754": { + "node_id": "node_1754", + "content": "INITIAL DESIGN (Trace 256)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 106.40 kg\n Factor of Safety: 0.81\n Max Deflection: 3.01e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.40136973752605, + "fos_buckling": 0.8129614531880155, + "fos_yielding": 2.0345780116925543, + "deflection": 0.0030132882290476513, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1755": { + "node_id": "node_1755", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 124.25 kg\n Factor of Safety: 0.94\n Max Deflection: 2.58e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.24678711673754, + "fos_buckling": 0.9352916310680632, + "fos_yielding": 2.3752775608418673, + "deflection": 0.0025836418457605335, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_1754", + "improvement_over_parent": null + }, + "node_1756": { + "node_id": "node_1756", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 140.23 kg\n Factor of Safety: 1.04\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.23465044733118, + "fos_buckling": 1.0415055750387328, + "fos_yielding": 2.6803827754602003, + "deflection": 0.002291585424009807, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.136)" + }, + "parent_node_id": "node_1755", + "improvement_over_parent": null + }, + "node_1757": { + "node_id": "node_1757", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 169.31 kg\n Factor of Safety: 1.23\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.3053457354228, + "fos_buckling": 1.2264824670097663, + "fos_yielding": 3.2348392456538786, + "deflection": 0.0019018712082196942, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.222)" + }, + "parent_node_id": "node_1756", + "improvement_over_parent": null + }, + "node_1758": { + "node_id": "node_1758", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.44 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.44329427915056, + "fos_buckling": 1.5209768956739234, + "fos_yielding": 4.190149156993104, + "deflection": 0.0014723442649057477, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.325)" + }, + "parent_node_id": "node_1757", + "improvement_over_parent": null + }, + "node_1759": { + "node_id": "node_1759", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.00 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.99770161484858, + "fos_buckling": 1.566507691893546, + "fos_yielding": 4.146429476212518, + "deflection": 0.00145213142036685, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1758", + "improvement_over_parent": null + }, + "node_1760": { + "node_id": "node_1760", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1759", + "improvement_over_parent": null + }, + "node_1761": { + "node_id": "node_1761", + "content": "INITIAL DESIGN (Trace 257)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 121.02 kg\n Factor of Safety: 0.94\n Max Deflection: 2.62e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.02176651707194, + "fos_buckling": 0.9371252133063135, + "fos_yielding": 2.2981263464472055, + "deflection": 0.0026235541368386235, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1762": { + "node_id": "node_1762", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 145.26 kg\n Factor of Safety: 1.10\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.260207306909, + "fos_buckling": 1.1022611894074779, + "fos_yielding": 2.7570073602840064, + "deflection": 0.002189366796258702, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.212)" + }, + "parent_node_id": "node_1761", + "improvement_over_parent": null + }, + "node_1763": { + "node_id": "node_1763", + "content": "MODIFICATION: Increase 8 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 145.89 kg\n Factor of Safety: 1.11\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.8874879683232, + "fos_buckling": 1.1051297935063231, + "fos_yielding": 2.7547702152836906, + "deflection": 0.0021871163276061655, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.199)" + }, + "parent_node_id": "node_1762", + "improvement_over_parent": null + }, + "node_1764": { + "node_id": "node_1764", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 175.53 kg\n Factor of Safety: 1.30\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.5264453403134, + "fos_buckling": 1.296673128065877, + "fos_yielding": 3.312380262976248, + "deflection": 0.0018214186616132334, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_1763", + "improvement_over_parent": null + }, + "node_1765": { + "node_id": "node_1765", + "content": "MODIFICATION: Increase 8 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 177.67 kg\n Factor of Safety: 1.30\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.66965636130612, + "fos_buckling": 1.297400881527551, + "fos_yielding": 3.3063027287466626, + "deflection": 0.001817398822500539, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.488)" + }, + "parent_node_id": "node_1764", + "improvement_over_parent": null + }, + "node_1766": { + "node_id": "node_1766", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.99 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.98913994860916, + "fos_buckling": 1.5664707138434095, + "fos_yielding": 4.146308544799488, + "deflection": 0.0014521788647277622, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.280)" + }, + "parent_node_id": "node_1765", + "improvement_over_parent": null + }, + "node_1767": { + "node_id": "node_1767", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1766", + "improvement_over_parent": null + }, + "node_1768": { + "node_id": "node_1768", + "content": "INITIAL DESIGN (Trace 258)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 144.12 kg\n Factor of Safety: 0.94\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.11792430407723, + "fos_buckling": 0.9355823557613426, + "fos_yielding": 2.9424362703766778, + "deflection": 0.0022235270252870696, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1769": { + "node_id": "node_1769", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 153.04 kg\n Factor of Safety: 1.12\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.03892310275964, + "fos_buckling": 1.1242481822888093, + "fos_yielding": 2.949503365021464, + "deflection": 0.0021606524052906633, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002141)" + }, + "parent_node_id": "node_1768", + "improvement_over_parent": null + }, + "node_1770": { + "node_id": "node_1770", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 172.16 kg\n Factor of Safety: 1.24\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.16351528934058, + "fos_buckling": 1.2394067142421823, + "fos_yielding": 3.316325301690637, + "deflection": 0.0019224057963824624, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_1769", + "improvement_over_parent": null + }, + "node_1771": { + "node_id": "node_1771", + "content": "MODIFICATION: Increase 0 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 175.95 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.95054721455833, + "fos_buckling": 1.3001473278010778, + "fos_yielding": 3.3299591812551137, + "deflection": 0.0018136638187770482, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.385)" + }, + "parent_node_id": "node_1770", + "improvement_over_parent": null + }, + "node_1772": { + "node_id": "node_1772", + "content": "MODIFICATION: Increase 8 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 178.54 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.53763008040298, + "fos_buckling": 1.3027569733255973, + "fos_yielding": 3.3223254394198913, + "deflection": 0.0018086385009543232, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.645)" + }, + "parent_node_id": "node_1771", + "improvement_over_parent": null + }, + "node_1773": { + "node_id": "node_1773", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.42 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.41705783260497, + "fos_buckling": 1.568858391243452, + "fos_yielding": 4.154138032682109, + "deflection": 0.0014494176441817378, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_1772", + "improvement_over_parent": null + }, + "node_1774": { + "node_id": "node_1774", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1773", + "improvement_over_parent": null + }, + "node_1775": { + "node_id": "node_1775", + "content": "INITIAL DESIGN (Trace 259)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 118.26 kg\n Factor of Safety: 0.89\n Max Deflection: 2.74e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 118.26122649778873, + "fos_buckling": 0.8882179243631876, + "fos_yielding": 2.3233158612172917, + "deflection": 0.002742711286351657, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1776": { + "node_id": "node_1776", + "content": "MODIFICATION: Increase 7 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 119.82 kg\n Factor of Safety: 0.89\n Max Deflection: 2.74e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.82074454584603, + "fos_buckling": 0.8892167622193056, + "fos_yielding": 2.3237406545007997, + "deflection": 0.002742677439281433, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.511)" + }, + "parent_node_id": "node_1775", + "improvement_over_parent": null + }, + "node_1777": { + "node_id": "node_1777", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 153.28 kg\n Factor of Safety: 1.11\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.2779028046738, + "fos_buckling": 1.1066598896375046, + "fos_yielding": 2.9705033605066054, + "deflection": 0.00214735660780114, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.297)" + }, + "parent_node_id": "node_1776", + "improvement_over_parent": null + }, + "node_1778": { + "node_id": "node_1778", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 193.42 kg\n Factor of Safety: 1.35\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.4175326334285, + "fos_buckling": 1.34991051285473, + "fos_yielding": 3.7452477121722714, + "deflection": 0.0017048990396788149, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.284)" + }, + "parent_node_id": "node_1777", + "improvement_over_parent": null + }, + "node_1779": { + "node_id": "node_1779", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 198.89 kg\n Factor of Safety: 1.43\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.8940242450466, + "fos_buckling": 1.4264893589905652, + "fos_yielding": 3.699896826179451, + "deflection": 0.0016256414361530756, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002259)" + }, + "parent_node_id": "node_1778", + "improvement_over_parent": null + }, + "node_1780": { + "node_id": "node_1780", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.51 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.50781447512645, + "fos_buckling": 1.5693883842787955, + "fos_yielding": 4.155943831776581, + "deflection": 0.0014488614533069064, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.136)" + }, + "parent_node_id": "node_1779", + "improvement_over_parent": null + }, + "node_1781": { + "node_id": "node_1781", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1780", + "improvement_over_parent": null + }, + "node_1782": { + "node_id": "node_1782", + "content": "INITIAL DESIGN (Trace 260)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 127.20 kg\n Factor of Safety: 0.59\n Max Deflection: 2.19e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.20484198056967, + "fos_buckling": 0.5933648107453595, + "fos_yielding": 1.7882472358710308, + "deflection": 21935053147832.504, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1783": { + "node_id": "node_1783", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 161.04 kg\n Factor of Safety: 0.09\n Max Deflection: 5.32e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.03776563636785, + "fos_buckling": 0.08844136758652016, + "fos_yielding": 2.1625358968577, + "deflection": 5324826628134.949, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_1782", + "improvement_over_parent": null + }, + "node_1784": { + "node_id": "node_1784", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 167.19 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.19158037466568, + "fos_buckling": 0.06048222635273578, + "fos_yielding": 1.4788892254714423, + "deflection": 0.006107430551029765, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1783", + "improvement_over_parent": null + }, + "node_1785": { + "node_id": "node_1785", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 179.74 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.73993799476193, + "fos_buckling": 0.06040183662100057, + "fos_yielding": 1.4769235652226216, + "deflection": 0.006099924852552708, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1784", + "improvement_over_parent": null + }, + "node_1786": { + "node_id": "node_1786", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.35099223752263, + "fos_buckling": 1.568663179069655, + "fos_yielding": 4.153590917351525, + "deflection": 0.0014498654106786116, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1785", + "improvement_over_parent": null + }, + "node_1787": { + "node_id": "node_1787", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1786", + "improvement_over_parent": null + }, + "node_1788": { + "node_id": "node_1788", + "content": "INITIAL DESIGN (Trace 261)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 164.94 kg\n Factor of Safety: 0.88\n Max Deflection: 2.05e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.93788640612692, + "fos_buckling": 0.883115774905153, + "fos_yielding": 3.757566832272838, + "deflection": 0.002049416825788846, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1789": { + "node_id": "node_1789", + "content": "MODIFICATION: Increase 8 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 179.30 kg\n Factor of Safety: 1.33\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.29672017496497, + "fos_buckling": 1.333592221885538, + "fos_yielding": 3.757566832272838, + "deflection": 0.0017249496688035045, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.653)" + }, + "parent_node_id": "node_1788", + "improvement_over_parent": null + }, + "node_1790": { + "node_id": "node_1790", + "content": "MODIFICATION: Increase 5 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 180.93 kg\n Factor of Safety: 1.33\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.92827670971468, + "fos_buckling": 1.3331316485885791, + "fos_yielding": 3.757566832272838, + "deflection": 0.0017200013819641117, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.456)" + }, + "parent_node_id": "node_1789", + "improvement_over_parent": null + }, + "node_1791": { + "node_id": "node_1791", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 192.16 kg\n Factor of Safety: 1.39\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.16113181842636, + "fos_buckling": 1.39174106669074, + "fos_yielding": 3.757566832272838, + "deflection": 0.001639666520709642, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002743)" + }, + "parent_node_id": "node_1790", + "improvement_over_parent": null + }, + "node_1792": { + "node_id": "node_1792", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 214.72 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.71865958948692, + "fos_buckling": 1.5235652715227976, + "fos_yielding": 4.197584129936096, + "deflection": 0.0014696635044493325, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.129)" + }, + "parent_node_id": "node_1791", + "improvement_over_parent": null + }, + "node_1793": { + "node_id": "node_1793", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33176420424758, + "fos_buckling": 1.5686637898633273, + "fos_yielding": 4.152446515439595, + "deflection": 0.0014499416461373044, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1792", + "improvement_over_parent": null + }, + "node_1794": { + "node_id": "node_1794", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1793", + "improvement_over_parent": null + }, + "node_1795": { + "node_id": "node_1795", + "content": "INITIAL DESIGN (Trace 262)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0012)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n\nPerformance:\n Mass: 73.10 kg\n Factor of Safety: 0.75\n Max Deflection: 5.38e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 73.10072296453338, + "fos_buckling": 0.750514902775416, + "fos_yielding": 1.8487977047467594, + "deflection": 5376999301804.196, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1796": { + "node_id": "node_1796", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0016)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n\nPerformance:\n Mass: 94.83 kg\n Factor of Safety: 0.28\n Max Deflection: 4.48e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 94.82679365421511, + "fos_buckling": 0.2767163955813975, + "fos_yielding": 2.5097469182171013, + "deflection": 4477464484930.192, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.312)" + }, + "parent_node_id": "node_1795", + "improvement_over_parent": null + }, + "node_1797": { + "node_id": "node_1797", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0016)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 119.81 kg\n Factor of Safety: 0.87\n Max Deflection: 2.80e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.81155343179582, + "fos_buckling": 0.8746381511803962, + "fos_yielding": 2.4272575957679274, + "deflection": 0.002796675462510807, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003216)" + }, + "parent_node_id": "node_1796", + "improvement_over_parent": null + }, + "node_1798": { + "node_id": "node_1798", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 156.04 kg\n Factor of Safety: 1.09\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.0415182145237, + "fos_buckling": 1.0904185420892731, + "fos_yielding": 3.157989657784327, + "deflection": 0.002150076814959298, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.323)" + }, + "parent_node_id": "node_1797", + "improvement_over_parent": null + }, + "node_1799": { + "node_id": "node_1799", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 175.27 kg\n Factor of Safety: 1.20\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.27102481790592, + "fos_buckling": 1.1963413319243963, + "fos_yielding": 3.545191712439781, + "deflection": 0.0019154226346572698, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.133)" + }, + "parent_node_id": "node_1798", + "improvement_over_parent": null + }, + "node_1800": { + "node_id": "node_1800", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.53 kg\n Factor of Safety: 1.35\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.53499392424297, + "fos_buckling": 1.346434799818037, + "fos_yielding": 4.133565618389424, + "deflection": 0.0016429154565278305, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.183)" + }, + "parent_node_id": "node_1799", + "improvement_over_parent": null + }, + "node_1801": { + "node_id": "node_1801", + "content": "MODIFICATION: Increase 1 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.47 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.474089069245, + "fos_buckling": 1.3380190909418634, + "fos_yielding": 4.133221169797946, + "deflection": 0.0014973906240286113, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.562)" + }, + "parent_node_id": "node_1800", + "improvement_over_parent": null + }, + "node_1802": { + "node_id": "node_1802", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.02 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.02244668934125, + "fos_buckling": 1.5670220059818627, + "fos_yielding": 4.146303522169473, + "deflection": 0.0014519715373452673, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1801", + "improvement_over_parent": null + }, + "node_1803": { + "node_id": "node_1803", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1802", + "improvement_over_parent": null + }, + "node_1804": { + "node_id": "node_1804", + "content": "INITIAL DESIGN (Trace 263)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 149.60 kg\n Factor of Safety: 0.06\n Max Deflection: 6.82e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.60111427867525, + "fos_buckling": 0.055211919198194424, + "fos_yielding": 1.3248655848897528, + "deflection": 0.006818624882093767, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1805": { + "node_id": "node_1805", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 160.83 kg\n Factor of Safety: 0.06\n Max Deflection: 6.81e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.83396938738693, + "fos_buckling": 0.055146139543305564, + "fos_yielding": 1.3232871358480642, + "deflection": 0.006809670322521692, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002743)" + }, + "parent_node_id": "node_1804", + "improvement_over_parent": null + }, + "node_1806": { + "node_id": "node_1806", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 179.71 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.71400612046875, + "fos_buckling": 0.06039251048909226, + "fos_yielding": 1.4766449172479683, + "deflection": 0.006100749045410798, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.129)" + }, + "parent_node_id": "node_1805", + "improvement_over_parent": null + }, + "node_1807": { + "node_id": "node_1807", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32506036322945, + "fos_buckling": 1.5684581599982872, + "fos_yielding": 4.152820324805977, + "deflection": 0.0014500440079154128, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1806", + "improvement_over_parent": null + }, + "node_1808": { + "node_id": "node_1808", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1807", + "improvement_over_parent": null + }, + "node_1809": { + "node_id": "node_1809", + "content": "INITIAL DESIGN (Trace 264)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 141.78 kg\n Factor of Safety: 0.88\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.77639968703977, + "fos_buckling": 0.8778529893207986, + "fos_yielding": 2.1197529081680107, + "deflection": 0.0022161517760433003, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1810": { + "node_id": "node_1810", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 176.63 kg\n Factor of Safety: 1.07\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.63229252489072, + "fos_buckling": 1.0736116436783614, + "fos_yielding": 2.647843541961934, + "deflection": 0.0017833526976767959, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.264)" + }, + "parent_node_id": "node_1809", + "improvement_over_parent": null + }, + "node_1811": { + "node_id": "node_1811", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.20 kg\n Factor of Safety: 1.28\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.1993243102153, + "fos_buckling": 1.2808525641494197, + "fos_yielding": 3.236100981837377, + "deflection": 0.0014678929857694048, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_1810", + "improvement_over_parent": null + }, + "node_1812": { + "node_id": "node_1812", + "content": "MODIFICATION: Increase 4 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.16643702215322, + "fos_buckling": 1.5673460596474222, + "fos_yielding": 4.1517064557334065, + "deflection": 0.001451133171315921, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.323)" + }, + "parent_node_id": "node_1811", + "improvement_over_parent": null + }, + "node_1813": { + "node_id": "node_1813", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1812", + "improvement_over_parent": null + }, + "node_1814": { + "node_id": "node_1814", + "content": "INITIAL DESIGN (Trace 265)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 123.62 kg\n Factor of Safety: 0.97\n Max Deflection: 2.67e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.61731020624748, + "fos_buckling": 0.967573229760143, + "fos_yielding": 2.46548540065757, + "deflection": 0.0026734536289926745, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1815": { + "node_id": "node_1815", + "content": "MODIFICATION: Increase 0 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 126.38 kg\n Factor of Safety: 0.97\n Max Deflection: 2.51e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.3807934088583, + "fos_buckling": 0.9672891405932633, + "fos_yielding": 2.465485400657571, + "deflection": 0.0025060858772669647, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.374)" + }, + "parent_node_id": "node_1814", + "improvement_over_parent": null + }, + "node_1816": { + "node_id": "node_1816", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 128.47 kg\n Factor of Safety: 0.98\n Max Deflection: 2.47e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.46757047007094, + "fos_buckling": 0.9820428661597347, + "fos_yielding": 2.4396959750165426, + "deflection": 0.0024694507627097974, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001112)" + }, + "parent_node_id": "node_1815", + "improvement_over_parent": null + }, + "node_1817": { + "node_id": "node_1817", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 147.26 kg\n Factor of Safety: 1.11\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.26014508077176, + "fos_buckling": 1.1081203798944472, + "fos_yielding": 2.795338434149654, + "deflection": 0.0021570727718408424, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_1816", + "improvement_over_parent": null + }, + "node_1818": { + "node_id": "node_1818", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 177.01 kg\n Factor of Safety: 1.30\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.01176000973626, + "fos_buckling": 1.2986626457618955, + "fos_yielding": 3.3577074519669625, + "deflection": 0.0017981625149061566, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.217)" + }, + "parent_node_id": "node_1817", + "improvement_over_parent": null + }, + "node_1819": { + "node_id": "node_1819", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 219.14 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.14397103333658, + "fos_buckling": 1.5496245003313627, + "fos_yielding": 4.152664510770833, + "deflection": 0.0014566354850095084, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.261)" + }, + "parent_node_id": "node_1818", + "improvement_over_parent": null + }, + "node_1820": { + "node_id": "node_1820", + "content": "MODIFICATION: Increase 9 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0090)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 240.00 kg\n Factor of Safety: 1.47\n Max Deflection: 1.32e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 239.99854143070587, + "fos_buckling": 1.4702828559172065, + "fos_yielding": 4.146540122620824, + "deflection": 0.001323469075602162, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.570)" + }, + "parent_node_id": "node_1819", + "improvement_over_parent": null + }, + "node_1821": { + "node_id": "node_1821", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1820", + "improvement_over_parent": null + }, + "node_1822": { + "node_id": "node_1822", + "content": "INITIAL DESIGN (Trace 266)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0019)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0018)]\n\nPerformance:\n Mass: 96.33 kg\n Factor of Safety: 0.60\n Max Deflection: 3.39e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 96.32811231806696, + "fos_buckling": 0.6022666100552849, + "fos_yielding": 1.6647224998084347, + "deflection": 0.0033874876198484983, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1823": { + "node_id": "node_1823", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n\nPerformance:\n Mass: 109.26 kg\n Factor of Safety: 0.68\n Max Deflection: 2.99e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.25721371673235, + "fos_buckling": 0.6783413991993381, + "fos_yielding": 1.8897360751584225, + "deflection": 0.002988483725469364, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_1822", + "improvement_over_parent": null + }, + "node_1824": { + "node_id": "node_1824", + "content": "MODIFICATION: Increase 8 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n\nPerformance:\n Mass: 110.00 kg\n Factor of Safety: 0.68\n Max Deflection: 2.99e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.00467304870774, + "fos_buckling": 0.6779708336408065, + "fos_yielding": 1.8900535892352603, + "deflection": 0.002985983619162676, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.199)" + }, + "parent_node_id": "node_1823", + "improvement_over_parent": null + }, + "node_1825": { + "node_id": "node_1825", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 136.27 kg\n Factor of Safety: 0.83\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.2748920863759, + "fos_buckling": 0.8280270075326889, + "fos_yielding": 2.3457073287203762, + "deflection": 0.002413204387460576, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.252)" + }, + "parent_node_id": "node_1824", + "improvement_over_parent": null + }, + "node_1826": { + "node_id": "node_1826", + "content": "MODIFICATION: Increase 6 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 141.87 kg\n Factor of Safety: 0.82\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.87253685129406, + "fos_buckling": 0.8207444543491615, + "fos_yielding": 2.80097780927204, + "deflection": 0.0023658530898047624, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.399)" + }, + "parent_node_id": "node_1825", + "improvement_over_parent": null + }, + "node_1827": { + "node_id": "node_1827", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 183.21 kg\n Factor of Safety: 1.02\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.20898779735182, + "fos_buckling": 1.022122833994326, + "fos_yielding": 3.61119120900556, + "deflection": 0.0018349684464425108, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.314)" + }, + "parent_node_id": "node_1826", + "improvement_over_parent": null + }, + "node_1828": { + "node_id": "node_1828", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 211.35 kg\n Factor of Safety: 1.15\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.3509817497418, + "fos_buckling": 1.1499294411355487, + "fos_yielding": 4.161120358417407, + "deflection": 0.0015923001509666294, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_1827", + "improvement_over_parent": null + }, + "node_1829": { + "node_id": "node_1829", + "content": "MODIFICATION: Increase 10 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.39 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.39369807654953, + "fos_buckling": 1.5693727993364233, + "fos_yielding": 4.153293401946671, + "deflection": 0.0014494959120804486, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.431)" + }, + "parent_node_id": "node_1828", + "improvement_over_parent": null + }, + "node_1830": { + "node_id": "node_1830", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1829", + "improvement_over_parent": null + }, + "node_1831": { + "node_id": "node_1831", + "content": "INITIAL DESIGN (Trace 267)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 139.13 kg\n Factor of Safety: 0.91\n Max Deflection: 2.31e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.13457507792606, + "fos_buckling": 0.9083948595842299, + "fos_yielding": 2.5332062108105013, + "deflection": 0.002310182178875171, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1832": { + "node_id": "node_1832", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 162.08 kg\n Factor of Safety: 1.04\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.08415323622566, + "fos_buckling": 1.043976735067776, + "fos_yielding": 2.9542683780521872, + "deflection": 0.0019857084742080744, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_1831", + "improvement_over_parent": null + }, + "node_1833": { + "node_id": "node_1833", + "content": "MODIFICATION: Increase 6 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 167.16 kg\n Factor of Safety: 1.02\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.160310744979, + "fos_buckling": 1.018480009291382, + "fos_yielding": 3.241893213105582, + "deflection": 0.001961386921816375, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.292)" + }, + "parent_node_id": "node_1832", + "improvement_over_parent": null + }, + "node_1834": { + "node_id": "node_1834", + "content": "MODIFICATION: Increase 5 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 168.35 kg\n Factor of Safety: 1.11\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.3467020793227, + "fos_buckling": 1.112300034977278, + "fos_yielding": 3.237642431230129, + "deflection": 0.0019512979011961085, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.353)" + }, + "parent_node_id": "node_1833", + "improvement_over_parent": null + }, + "node_1835": { + "node_id": "node_1835", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 188.61 kg\n Factor of Safety: 1.23\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.60569162898813, + "fos_buckling": 1.2292999438287597, + "fos_yielding": 3.6249138827665766, + "deflection": 0.0017435357189503175, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.130)" + }, + "parent_node_id": "node_1834", + "improvement_over_parent": null + }, + "node_1836": { + "node_id": "node_1836", + "content": "MODIFICATION: Increase 10 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 194.67 kg\n Factor of Safety: 1.40\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.6714379562401, + "fos_buckling": 1.4012710936805637, + "fos_yielding": 3.6214565415360265, + "deflection": 0.001660503372283321, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.211)" + }, + "parent_node_id": "node_1835", + "improvement_over_parent": null + }, + "node_1837": { + "node_id": "node_1837", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.03 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.02580575595417, + "fos_buckling": 1.5666975645523293, + "fos_yielding": 4.1468331922461505, + "deflection": 0.0014519852443647136, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.160)" + }, + "parent_node_id": "node_1836", + "improvement_over_parent": null + }, + "node_1838": { + "node_id": "node_1838", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1837", + "improvement_over_parent": null + }, + "node_1839": { + "node_id": "node_1839", + "content": "INITIAL DESIGN (Trace 268)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n\nPerformance:\n Mass: 89.67 kg\n Factor of Safety: 0.69\n Max Deflection: 3.56e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 89.66872483220544, + "fos_buckling": 0.6947091927744159, + "fos_yielding": 1.798901422454635, + "deflection": 0.003561020063822086, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1840": { + "node_id": "node_1840", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n\nPerformance:\n Mass: 93.36 kg\n Factor of Safety: 0.66\n Max Deflection: 3.47e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 93.35656231576053, + "fos_buckling": 0.658761202021401, + "fos_yielding": 1.7754078813098437, + "deflection": 0.003466068124706528, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001042)" + }, + "parent_node_id": "node_1839", + "improvement_over_parent": null + }, + "node_1841": { + "node_id": "node_1841", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n\nPerformance:\n Mass: 108.67 kg\n Factor of Safety: 0.75\n Max Deflection: 2.98e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.66566598206528, + "fos_buckling": 0.7530139653362373, + "fos_yielding": 2.06594377277122, + "deflection": 0.002980939122507449, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_1840", + "improvement_over_parent": null + }, + "node_1842": { + "node_id": "node_1842", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 137.48 kg\n Factor of Safety: 0.92\n Max Deflection: 2.36e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.48480451019213, + "fos_buckling": 0.9205264879844857, + "fos_yielding": 2.612411667425211, + "deflection": 0.0023608150009590103, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.280)" + }, + "parent_node_id": "node_1841", + "improvement_over_parent": null + }, + "node_1843": { + "node_id": "node_1843", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 179.63 kg\n Factor of Safety: 1.14\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.63000771799284, + "fos_buckling": 1.1430129222299905, + "fos_yielding": 3.4104853188807827, + "deflection": 0.0018122106462557124, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.330)" + }, + "parent_node_id": "node_1842", + "improvement_over_parent": null + }, + "node_1844": { + "node_id": "node_1844", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 183.89 kg\n Factor of Safety: 1.34\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.89041874911402, + "fos_buckling": 1.3358063733225767, + "fos_yielding": 3.4217057995418934, + "deflection": 0.0017566008883335646, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001923)" + }, + "parent_node_id": "node_1843", + "improvement_over_parent": null + }, + "node_1845": { + "node_id": "node_1845", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.40754250261523, + "fos_buckling": 1.5688383617725021, + "fos_yielding": 4.15408034738854, + "deflection": 0.0014494916220928354, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.236)" + }, + "parent_node_id": "node_1844", + "improvement_over_parent": null + }, + "node_1846": { + "node_id": "node_1846", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1845", + "improvement_over_parent": null + }, + "node_1847": { + "node_id": "node_1847", + "content": "INITIAL DESIGN (Trace 269)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0017)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 105.42 kg\n Factor of Safety: 0.69\n Max Deflection: 3.05e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 105.41871024964529, + "fos_buckling": 0.6932325191304367, + "fos_yielding": 1.8915825974554843, + "deflection": 0.003052795055107739, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1848": { + "node_id": "node_1848", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 126.88 kg\n Factor of Safety: 0.82\n Max Deflection: 2.54e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.88256788650969, + "fos_buckling": 0.8243795236389483, + "fos_yielding": 2.2793109662458266, + "deflection": 0.0025398457683348126, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.214)" + }, + "parent_node_id": "node_1847", + "improvement_over_parent": null + }, + "node_1849": { + "node_id": "node_1849", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 156.31 kg\n Factor of Safety: 1.00\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.3079608283157, + "fos_buckling": 0.9986365433129705, + "fos_yielding": 2.812559588056455, + "deflection": 0.0020655652445153785, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.247)" + }, + "parent_node_id": "node_1848", + "improvement_over_parent": null + }, + "node_1850": { + "node_id": "node_1850", + "content": "MODIFICATION: Increase 1 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 158.88 kg\n Factor of Safety: 1.00\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.8761794601168, + "fos_buckling": 1.0043389087058108, + "fos_yielding": 2.8286197278216467, + "deflection": 0.001993722931748, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.261)" + }, + "parent_node_id": "node_1849", + "improvement_over_parent": null + }, + "node_1851": { + "node_id": "node_1851", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 181.86 kg\n Factor of Safety: 1.13\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.86126176585336, + "fos_buckling": 1.1347056289674877, + "fos_yielding": 3.242508271417141, + "deflection": 0.0017447121501606424, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_1850", + "improvement_over_parent": null + }, + "node_1852": { + "node_id": "node_1852", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.24 kg\n Factor of Safety: 1.31\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.23627110598193, + "fos_buckling": 1.3064926378107864, + "fos_yielding": 3.809895936138787, + "deflection": 0.0014914725563097285, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.189)" + }, + "parent_node_id": "node_1851", + "improvement_over_parent": null + }, + "node_1853": { + "node_id": "node_1853", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 216.79 kg\n Factor of Safety: 1.31\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.79067844167994, + "fos_buckling": 1.3104028745411083, + "fos_yielding": 3.8212986755014495, + "deflection": 0.0014686137244321084, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_1852", + "improvement_over_parent": null + }, + "node_1854": { + "node_id": "node_1854", + "content": "MODIFICATION: Increase 6 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0075)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 228.14 kg\n Factor of Safety: 1.31\n Max Deflection: 1.38e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.14066247732697, + "fos_buckling": 1.3084903953382057, + "fos_yielding": 3.815721646950184, + "deflection": 0.0013841874001089796, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.295)" + }, + "parent_node_id": "node_1853", + "improvement_over_parent": null + }, + "node_1855": { + "node_id": "node_1855", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1854", + "improvement_over_parent": null + }, + "node_1856": { + "node_id": "node_1856", + "content": "INITIAL DESIGN (Trace 270)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 90.49 kg\n Factor of Safety: 0.02\n Max Deflection: 1.80e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 90.49158090394863, + "fos_buckling": 0.024312716699346894, + "fos_yielding": 0.5327685719436881, + "deflection": 0.01799899591397793, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1857": { + "node_id": "node_1857", + "content": "MODIFICATION: Increase 2 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 91.23 kg\n Factor of Safety: 0.04\n Max Deflection: 1.66e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 91.22978253524286, + "fos_buckling": 0.03711428487119546, + "fos_yielding": 0.8415345372713874, + "deflection": 0.016573719332243983, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.608)" + }, + "parent_node_id": "node_1856", + "improvement_over_parent": null + }, + "node_1858": { + "node_id": "node_1858", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 114.40 kg\n Factor of Safety: 0.05\n Max Deflection: 1.32e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.40185705458823, + "fos_buckling": 0.04547003352568034, + "fos_yielding": 1.056739551166568, + "deflection": 0.013229748192159543, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.274)" + }, + "parent_node_id": "node_1857", + "improvement_over_parent": null + }, + "node_1859": { + "node_id": "node_1859", + "content": "MODIFICATION: Increase 1 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 117.88 kg\n Factor of Safety: 0.05\n Max Deflection: 1.32e-02 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.87515128610873, + "fos_buckling": 0.04545320935074683, + "fos_yielding": 1.05634855143137, + "deflection": 0.013232754497302808, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.321)" + }, + "parent_node_id": "node_1858", + "improvement_over_parent": null + }, + "node_1860": { + "node_id": "node_1860", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 136.34 kg\n Factor of Safety: 0.05\n Max Deflection: 1.14e-02 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.33924241573493, + "fos_buckling": 0.051626427564753004, + "fos_yielding": 1.2236451704644566, + "deflection": 0.011445783004182319, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.172)" + }, + "parent_node_id": "node_1859", + "improvement_over_parent": null + }, + "node_1861": { + "node_id": "node_1861", + "content": "MODIFICATION: Increase 2 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 136.96 kg\n Factor of Safety: 0.06\n Max Deflection: 1.12e-02 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.96163238976962, + "fos_buckling": 0.060660669867405086, + "fos_yielding": 1.2420250073727275, + "deflection": 0.011150227810754866, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.233)" + }, + "parent_node_id": "node_1860", + "improvement_over_parent": null + }, + "node_1862": { + "node_id": "node_1862", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 180.57 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.57268663253032, + "fos_buckling": 0.12784573180137956, + "fos_yielding": 2.1474282584980813, + "deflection": 0.004838224185631253, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1861", + "improvement_over_parent": null + }, + "node_1863": { + "node_id": "node_1863", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22465498390372, + "fos_buckling": 1.567971382173475, + "fos_yielding": 4.149837696022493, + "deflection": 0.0014505077793487884, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1862", + "improvement_over_parent": null + }, + "node_1864": { + "node_id": "node_1864", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1863", + "improvement_over_parent": null + }, + "node_1865": { + "node_id": "node_1865", + "content": "INITIAL DESIGN (Trace 271)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0024)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 116.58 kg\n Factor of Safety: 0.75\n Max Deflection: 2.66e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.57957215832486, + "fos_buckling": 0.7453064744444302, + "fos_yielding": 1.774236859862149, + "deflection": 0.002660063445227624, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1866": { + "node_id": "node_1866", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 136.99 kg\n Factor of Safety: 0.87\n Max Deflection: 2.27e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.98532147102713, + "fos_buckling": 0.8665573466931068, + "fos_yielding": 2.08821300333768, + "deflection": 0.002267052653089577, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.185)" + }, + "parent_node_id": "node_1865", + "improvement_over_parent": null + }, + "node_1867": { + "node_id": "node_1867", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 165.13 kg\n Factor of Safety: 1.03\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.1252777725023, + "fos_buckling": 1.0292181723745029, + "fos_yielding": 2.523159881445336, + "deflection": 0.0018844662256930463, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_1866", + "improvement_over_parent": null + }, + "node_1868": { + "node_id": "node_1868", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 170.08 kg\n Factor of Safety: 1.02\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.07929066042024, + "fos_buckling": 1.0204087579866061, + "fos_yielding": 2.501563332181843, + "deflection": 0.0018276354490583248, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002027)" + }, + "parent_node_id": "node_1867", + "improvement_over_parent": null + }, + "node_1869": { + "node_id": "node_1869", + "content": "MODIFICATION: Increase 4 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 177.41 kg\n Factor of Safety: 1.30\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.40909349725032, + "fos_buckling": 1.300162225773197, + "fos_yielding": 3.3447234331178834, + "deflection": 0.0018023030484101811, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.377)" + }, + "parent_node_id": "node_1868", + "improvement_over_parent": null + }, + "node_1870": { + "node_id": "node_1870", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 220.44 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.43676790817054, + "fos_buckling": 1.556259108762593, + "fos_yielding": 4.151821078697913, + "deflection": 0.0014547079190189223, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.266)" + }, + "parent_node_id": "node_1869", + "improvement_over_parent": null + }, + "node_1871": { + "node_id": "node_1871", + "content": "MODIFICATION: Increase 9 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0076)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 232.63 kg\n Factor of Safety: 1.55\n Max Deflection: 1.37e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 232.63001079189658, + "fos_buckling": 1.5476528853807532, + "fos_yielding": 4.147457667452662, + "deflection": 0.0013664953262612983, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.325)" + }, + "parent_node_id": "node_1870", + "improvement_over_parent": null + }, + "node_1872": { + "node_id": "node_1872", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1871", + "improvement_over_parent": null + }, + "node_1873": { + "node_id": "node_1873", + "content": "INITIAL DESIGN (Trace 272)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1874": { + "node_id": "node_1874", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 161.91 kg\n Factor of Safety: 0.24\n Max Deflection: 9.11e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.9072407056825, + "fos_buckling": 0.2360239853760644, + "fos_yielding": 2.1625358968577, + "deflection": 9114600340585.309, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1873", + "improvement_over_parent": null + }, + "node_1875": { + "node_id": "node_1875", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 168.06 kg\n Factor of Safety: 0.18\n Max Deflection: 3.27e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.06105544398034, + "fos_buckling": 0.17690045272099605, + "fos_yielding": 4.090880364128216, + "deflection": 3274489691888.6533, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1874", + "improvement_over_parent": null + }, + "node_1876": { + "node_id": "node_1876", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.71 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.71302379535373, + "fos_buckling": 1.3391847216908876, + "fos_yielding": 4.138237187227239, + "deflection": 0.0014958150964429536, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_1875", + "improvement_over_parent": null + }, + "node_1877": { + "node_id": "node_1877", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26138141545, + "fos_buckling": 1.5680860648903423, + "fos_yielding": 4.151338430127532, + "deflection": 0.0014504210666294822, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_1876", + "improvement_over_parent": null + }, + "node_1878": { + "node_id": "node_1878", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1877", + "improvement_over_parent": null + }, + "node_1879": { + "node_id": "node_1879", + "content": "INITIAL DESIGN (Trace 273)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 167.88 kg\n Factor of Safety: 1.26\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.8777885282136, + "fos_buckling": 1.2609613173539533, + "fos_yielding": 3.3397430305241027, + "deflection": 0.0018519845485076454, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1880": { + "node_id": "node_1880", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 211.06 kg\n Factor of Safety: 1.52\n Max Deflection: 1.48e-03 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 211.05750365684563, + "fos_buckling": 1.5235368883839153, + "fos_yielding": 4.19552903664487, + "deflection": 0.0014777318222643863, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.282)" + }, + "parent_node_id": "node_1879", + "improvement_over_parent": null + }, + "node_1881": { + "node_id": "node_1881", + "content": "MODIFICATION: Increase 8 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.60 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.5953528258216, + "fos_buckling": 1.5229680675007289, + "fos_yielding": 4.19552903664487, + "deflection": 0.0014704835192588844, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.431)" + }, + "parent_node_id": "node_1880", + "improvement_over_parent": null + }, + "node_1882": { + "node_id": "node_1882", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 220.81 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.80998591211446, + "fos_buckling": 1.5677199553934489, + "fos_yielding": 4.1573423911601495, + "deflection": 0.0014535544947515654, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001802)" + }, + "parent_node_id": "node_1881", + "improvement_over_parent": null + }, + "node_1883": { + "node_id": "node_1883", + "content": "MODIFICATION: Increase 8 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0044)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 225.42 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 225.41914448962532, + "fos_buckling": 1.5653892062082793, + "fos_yielding": 4.158533224593121, + "deflection": 0.0014484166659432943, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.422)" + }, + "parent_node_id": "node_1882", + "improvement_over_parent": null + }, + "node_1884": { + "node_id": "node_1884", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1883", + "improvement_over_parent": null + }, + "node_1885": { + "node_id": "node_1885", + "content": "INITIAL DESIGN (Trace 274)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 134.73 kg\n Factor of Safety: 0.49\n Max Deflection: 2.43e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.72703868831852, + "fos_buckling": 0.49176028138362177, + "fos_yielding": 2.677419861746736, + "deflection": 0.0024289850626403667, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1886": { + "node_id": "node_1886", + "content": "MODIFICATION: Increase 2 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 135.16 kg\n Factor of Safety: 0.59\n Max Deflection: 2.42e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.16235918806098, + "fos_buckling": 0.5857493042407816, + "fos_yielding": 2.6731761521413766, + "deflection": 0.0024228981136485373, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.362)" + }, + "parent_node_id": "node_1885", + "improvement_over_parent": null + }, + "node_1887": { + "node_id": "node_1887", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 157.75 kg\n Factor of Safety: 0.67\n Max Deflection: 2.08e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.75035552493193, + "fos_buckling": 0.6741094459222986, + "fos_yielding": 3.117053637288263, + "deflection": 0.0020783318461268787, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.178)" + }, + "parent_node_id": "node_1886", + "improvement_over_parent": null + }, + "node_1888": { + "node_id": "node_1888", + "content": "MODIFICATION: Increase 2 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 158.46 kg\n Factor of Safety: 0.81\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.4573773645345, + "fos_buckling": 0.8120289315103034, + "fos_yielding": 3.1124634782043277, + "deflection": 0.0020736152468182195, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.383)" + }, + "parent_node_id": "node_1887", + "improvement_over_parent": null + }, + "node_1889": { + "node_id": "node_1889", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 175.57 kg\n Factor of Safety: 0.89\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.5674380167484, + "fos_buckling": 0.8854549917085728, + "fos_yielding": 3.4462332170766663, + "deflection": 0.0018731179344531265, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.116)" + }, + "parent_node_id": "node_1888", + "improvement_over_parent": null + }, + "node_1890": { + "node_id": "node_1890", + "content": "MODIFICATION: Increase 7 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 183.69 kg\n Factor of Safety: 1.34\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.68773380687495, + "fos_buckling": 1.3394740276371657, + "fos_yielding": 3.4702578878792716, + "deflection": 0.0017382735993063893, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.309)" + }, + "parent_node_id": "node_1889", + "improvement_over_parent": null + }, + "node_1891": { + "node_id": "node_1891", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.02 kg\n Factor of Safety: 1.55\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.0237795052267, + "fos_buckling": 1.5543635797867483, + "fos_yielding": 4.153174113019956, + "deflection": 0.001454781009879709, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.217)" + }, + "parent_node_id": "node_1890", + "improvement_over_parent": null + }, + "node_1892": { + "node_id": "node_1892", + "content": "MODIFICATION: Increase 9 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.44 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.439029920106, + "fos_buckling": 1.5690337669947687, + "fos_yielding": 4.15474230982212, + "deflection": 0.0014492319736430245, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.410)" + }, + "parent_node_id": "node_1891", + "improvement_over_parent": null + }, + "node_1893": { + "node_id": "node_1893", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1892", + "improvement_over_parent": null + }, + "node_1894": { + "node_id": "node_1894", + "content": "INITIAL DESIGN (Trace 275)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 137.45 kg\n Factor of Safety: 1.06\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.45103440107306, + "fos_buckling": 1.0643763925239431, + "fos_yielding": 2.8856729035073507, + "deflection": 0.002235326737307854, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1895": { + "node_id": "node_1895", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 154.65 kg\n Factor of Safety: 1.18\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.64943323819358, + "fos_buckling": 1.1784268454410296, + "fos_yielding": 3.245864281442233, + "deflection": 0.001991745872286495, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_1894", + "improvement_over_parent": null + }, + "node_1896": { + "node_id": "node_1896", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 161.31 kg\n Factor of Safety: 1.17\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.30813071470644, + "fos_buckling": 1.1691245657652793, + "fos_yielding": 3.2045475012179003, + "deflection": 0.0019305877269267019, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001940)" + }, + "parent_node_id": "node_1895", + "improvement_over_parent": null + }, + "node_1897": { + "node_id": "node_1897", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 171.01 kg\n Factor of Safety: 1.12\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.0067566869796, + "fos_buckling": 1.1214091511933226, + "fos_yielding": 3.217229873801368, + "deflection": 0.0018819801813589267, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002341)" + }, + "parent_node_id": "node_1896", + "improvement_over_parent": null + }, + "node_1898": { + "node_id": "node_1898", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 189.84 kg\n Factor of Safety: 1.24\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.83520284948582, + "fos_buckling": 1.2406766644943243, + "fos_yielding": 3.569990339081098, + "deflection": 0.0016972536182024837, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_1897", + "improvement_over_parent": null + }, + "node_1899": { + "node_id": "node_1899", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 221.31 kg\n Factor of Safety: 1.44\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.3076720884722, + "fos_buckling": 1.4379452053671364, + "fos_yielding": 4.158975651363381, + "deflection": 0.0014586618531679432, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.182)" + }, + "parent_node_id": "node_1898", + "improvement_over_parent": null + }, + "node_1900": { + "node_id": "node_1900", + "content": "MODIFICATION: Increase 5 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32424280726462, + "fos_buckling": 1.5683747873140401, + "fos_yielding": 4.152513406800483, + "deflection": 0.0014500220953571016, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.534)" + }, + "parent_node_id": "node_1899", + "improvement_over_parent": null + }, + "node_1901": { + "node_id": "node_1901", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1900", + "improvement_over_parent": null + }, + "node_1902": { + "node_id": "node_1902", + "content": "INITIAL DESIGN (Trace 276)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 116.83 kg\n Factor of Safety: 0.05\n Max Deflection: 1.34e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.82968423028814, + "fos_buckling": 0.053722601035547234, + "fos_yielding": 1.0731531995393861, + "deflection": 0.01343483568030847, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1903": { + "node_id": "node_1903", + "content": "MODIFICATION: Increase 3 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 118.28 kg\n Factor of Safety: 0.05\n Max Deflection: 1.29e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 118.28492781347, + "fos_buckling": 0.053714273083793604, + "fos_yielding": 1.072985875442363, + "deflection": 0.012900439738894817, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.522)" + }, + "parent_node_id": "node_1902", + "improvement_over_parent": null + }, + "node_1904": { + "node_id": "node_1904", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 155.11 kg\n Factor of Safety: 0.05\n Max Deflection: 7.06e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.1118408441157, + "fos_buckling": 0.05350437903719846, + "fos_yielding": 1.2766886057263236, + "deflection": 0.007058763009942114, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004863)" + }, + "parent_node_id": "node_1903", + "improvement_over_parent": null + }, + "node_1905": { + "node_id": "node_1905", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n\nPerformance:\n Mass: 192.76 kg\n Factor of Safety: 1.39\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.7631700684829, + "fos_buckling": 1.3898753132632342, + "fos_yielding": 3.586194434327248, + "deflection": 0.001676668041419463, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004917)" + }, + "parent_node_id": "node_1904", + "improvement_over_parent": null + }, + "node_1906": { + "node_id": "node_1906", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.29475622510864, + "fos_buckling": 1.5683121606845523, + "fos_yielding": 4.151945259238219, + "deflection": 0.0014502000831415807, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.174)" + }, + "parent_node_id": "node_1905", + "improvement_over_parent": null + }, + "node_1907": { + "node_id": "node_1907", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1906", + "improvement_over_parent": null + }, + "node_1908": { + "node_id": "node_1908", + "content": "INITIAL DESIGN (Trace 277)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 103.35 kg\n Factor of Safety: 0.04\n Max Deflection: 1.06e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.34866700184648, + "fos_buckling": 0.041152517720083416, + "fos_yielding": 0.9442261684128687, + "deflection": 0.010643603179108601, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1909": { + "node_id": "node_1909", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 119.03 kg\n Factor of Safety: 0.05\n Max Deflection: 9.25e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.02882652597782, + "fos_buckling": 0.04653948941472924, + "fos_yielding": 1.085467699167735, + "deflection": 0.009247128754352876, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.161)" + }, + "parent_node_id": "node_1908", + "improvement_over_parent": null + }, + "node_1910": { + "node_id": "node_1910", + "content": "MODIFICATION: Increase 1 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 122.58 kg\n Factor of Safety: 0.05\n Max Deflection: 9.06e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 122.58303754521498, + "fos_buckling": 0.046521903988666125, + "fos_yielding": 1.0850575440025696, + "deflection": 0.009062223508087153, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.408)" + }, + "parent_node_id": "node_1909", + "improvement_over_parent": null + }, + "node_1911": { + "node_id": "node_1911", + "content": "MODIFICATION: Increase 4 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 130.32 kg\n Factor of Safety: 0.05\n Max Deflection: 8.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.319037037827, + "fos_buckling": 0.04652190398866613, + "fos_yielding": 1.0850575440025698, + "deflection": 0.008670212242085454, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.460)" + }, + "parent_node_id": "node_1910", + "improvement_over_parent": null + }, + "node_1912": { + "node_id": "node_1912", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 153.11 kg\n Factor of Safety: 0.05\n Max Deflection: 7.39e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.11123119785242, + "fos_buckling": 0.053364757763877765, + "fos_yielding": 1.272683208228939, + "deflection": 0.007385456421643386, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.189)" + }, + "parent_node_id": "node_1911", + "improvement_over_parent": null + }, + "node_1913": { + "node_id": "node_1913", + "content": "MODIFICATION: Increase 5 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 154.56 kg\n Factor of Safety: 0.05\n Max Deflection: 7.08e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.56140599837596, + "fos_buckling": 0.0533483341939331, + "fos_yielding": 1.2722915264793426, + "deflection": 0.007083964602779731, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.408)" + }, + "parent_node_id": "node_1912", + "improvement_over_parent": null + }, + "node_1914": { + "node_id": "node_1914", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.75 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.74544527744615, + "fos_buckling": 0.0604028155993827, + "fos_yielding": 1.4769526498197434, + "deflection": 0.006100063548774582, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.179)" + }, + "parent_node_id": "node_1913", + "improvement_over_parent": null + }, + "node_1915": { + "node_id": "node_1915", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.35649952020685, + "fos_buckling": 1.5687602845418636, + "fos_yielding": 4.154408571160691, + "deflection": 0.0014499569706106954, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1914", + "improvement_over_parent": null + }, + "node_1916": { + "node_id": "node_1916", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1915", + "improvement_over_parent": null + }, + "node_1917": { + "node_id": "node_1917", + "content": "INITIAL DESIGN (Trace 278)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 109.21 kg\n Factor of Safety: 0.84\n Max Deflection: 2.94e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.21243766792531, + "fos_buckling": 0.8436053935082887, + "fos_yielding": 2.0348737061860596, + "deflection": 0.0029437955382784708, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1918": { + "node_id": "node_1918", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 141.68 kg\n Factor of Safety: 1.07\n Max Deflection: 2.27e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.6823600628392, + "fos_buckling": 1.0659913718963294, + "fos_yielding": 2.638328950318714, + "deflection": 0.002273824203409695, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.314)" + }, + "parent_node_id": "node_1917", + "improvement_over_parent": null + }, + "node_1919": { + "node_id": "node_1919", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 173.29 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.28568508766472, + "fos_buckling": 1.2700637497853977, + "fos_yielding": 3.22500595634865, + "deflection": 0.0018628475401526814, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_1918", + "improvement_over_parent": null + }, + "node_1920": { + "node_id": "node_1920", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.17444017106928, + "fos_buckling": 1.567532576693042, + "fos_yielding": 4.149782145979392, + "deflection": 0.001450979228680893, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.316)" + }, + "parent_node_id": "node_1919", + "improvement_over_parent": null + }, + "node_1921": { + "node_id": "node_1921", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1920", + "improvement_over_parent": null + }, + "node_1922": { + "node_id": "node_1922", + "content": "INITIAL DESIGN (Trace 279)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 93.54 kg\n Factor of Safety: 0.07\n Max Deflection: 9.14e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 93.54259111614826, + "fos_buckling": 0.07377344266300451, + "fos_yielding": 1.1421140967929122, + "deflection": 0.00913687740141241, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1923": { + "node_id": "node_1923", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0019)]\n\nPerformance:\n Mass: 108.92 kg\n Factor of Safety: 0.61\n Max Deflection: 3.07e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.92423084396165, + "fos_buckling": 0.6076252347792169, + "fos_yielding": 2.2193010821798462, + "deflection": 0.003071566431306989, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.001942)" + }, + "parent_node_id": "node_1922", + "improvement_over_parent": null + }, + "node_1924": { + "node_id": "node_1924", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n\nPerformance:\n Mass: 129.10 kg\n Factor of Safety: 0.71\n Max Deflection: 2.59e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.1010448714641, + "fos_buckling": 0.7073680493173333, + "fos_yielding": 2.62860447587192, + "deflection": 0.002593724137983895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.195)" + }, + "parent_node_id": "node_1923", + "improvement_over_parent": null + }, + "node_1925": { + "node_id": "node_1925", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 168.61 kg\n Factor of Safety: 0.89\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.607573488723, + "fos_buckling": 0.8915012115948776, + "fos_yielding": 3.4282648703348495, + "deflection": 0.001989214271618227, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.328)" + }, + "parent_node_id": "node_1924", + "improvement_over_parent": null + }, + "node_1926": { + "node_id": "node_1926", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 171.51 kg\n Factor of Safety: 0.93\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.5109807019396, + "fos_buckling": 0.9293580089319057, + "fos_yielding": 3.4005250099682893, + "deflection": 0.0019713187194503982, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001580)" + }, + "parent_node_id": "node_1925", + "improvement_over_parent": null + }, + "node_1927": { + "node_id": "node_1927", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 209.96 kg\n Factor of Safety: 1.10\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.9620883607353, + "fos_buckling": 1.1000491300307302, + "fos_yielding": 4.156190467964107, + "deflection": 0.001612385293594969, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.245)" + }, + "parent_node_id": "node_1926", + "improvement_over_parent": null + }, + "node_1928": { + "node_id": "node_1928", + "content": "MODIFICATION: Increase 10 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0029)]\n\nPerformance:\n Mass: 211.46 kg\n Factor of Safety: 1.10\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.45514623328415, + "fos_buckling": 1.1037849925016172, + "fos_yielding": 4.15299961767078, + "deflection": 0.0016113376179583134, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.486)" + }, + "parent_node_id": "node_1927", + "improvement_over_parent": null + }, + "node_1929": { + "node_id": "node_1929", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1928", + "improvement_over_parent": null + }, + "node_1930": { + "node_id": "node_1930", + "content": "INITIAL DESIGN (Trace 280)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 196.50 kg\n Factor of Safety: 1.30\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.50370023642043, + "fos_buckling": 1.3032038728418534, + "fos_yielding": 3.3001942703474754, + "deflection": 0.0015206372133080017, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1931": { + "node_id": "node_1931", + "content": "MODIFICATION: Increase 7 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 200.99 kg\n Factor of Safety: 1.30\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.98623787944533, + "fos_buckling": 1.3032038728418534, + "fos_yielding": 3.3001942703474754, + "deflection": 0.0015206291735262547, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.610)" + }, + "parent_node_id": "node_1930", + "improvement_over_parent": null + }, + "node_1932": { + "node_id": "node_1932", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 209.60 kg\n Factor of Safety: 1.31\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.59934249420598, + "fos_buckling": 1.3114991118063288, + "fos_yielding": 3.3212008838729763, + "deflection": 0.0015202258965002367, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_1931", + "improvement_over_parent": null + }, + "node_1933": { + "node_id": "node_1933", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 215.75 kg\n Factor of Safety: 1.30\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.7531572325038, + "fos_buckling": 1.2991247415435445, + "fos_yielding": 3.2898644010006954, + "deflection": 0.001465965196914799, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1932", + "improvement_over_parent": null + }, + "node_1934": { + "node_id": "node_1934", + "content": "MODIFICATION: Increase 4 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25459383527019, + "fos_buckling": 1.5679699325610614, + "fos_yielding": 4.15192529503303, + "deflection": 0.0014504421773396104, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.299)" + }, + "parent_node_id": "node_1933", + "improvement_over_parent": null + }, + "node_1935": { + "node_id": "node_1935", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1934", + "improvement_over_parent": null + }, + "node_1936": { + "node_id": "node_1936", + "content": "INITIAL DESIGN (Trace 281)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0013)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 111.69 kg\n Factor of Safety: 0.60\n Max Deflection: 3.03e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.68951184171215, + "fos_buckling": 0.5974560361880236, + "fos_yielding": 2.1764696579214418, + "deflection": 0.0030329420768184603, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1937": { + "node_id": "node_1937", + "content": "MODIFICATION: Increase 2 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0013)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 111.97 kg\n Factor of Safety: 0.59\n Max Deflection: 3.03e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.96934731016069, + "fos_buckling": 0.593924237394441, + "fos_yielding": 2.1758656983158886, + "deflection": 0.0030321670245704382, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.186)" + }, + "parent_node_id": "node_1936", + "improvement_over_parent": null + }, + "node_1938": { + "node_id": "node_1938", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0015)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 125.41 kg\n Factor of Safety: 0.66\n Max Deflection: 2.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.40728042807933, + "fos_buckling": 0.6633247327987947, + "fos_yielding": 2.4359911620830315, + "deflection": 0.0027084958339587263, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_1937", + "improvement_over_parent": null + }, + "node_1939": { + "node_id": "node_1939", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0017)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 143.30 kg\n Factor of Safety: 0.76\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.3028353356433, + "fos_buckling": 0.7551127537253128, + "fos_yielding": 2.782054576183191, + "deflection": 0.0023716807010400517, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_1938", + "improvement_over_parent": null + }, + "node_1940": { + "node_id": "node_1940", + "content": "MODIFICATION: Increase 1 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 147.63 kg\n Factor of Safety: 0.99\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.62850169133412, + "fos_buckling": 0.9934013272546061, + "fos_yielding": 2.776136123711809, + "deflection": 0.0021770889053879176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.621)" + }, + "parent_node_id": "node_1939", + "improvement_over_parent": null + }, + "node_1941": { + "node_id": "node_1941", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 172.29 kg\n Factor of Safety: 1.15\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.29240729751913, + "fos_buckling": 1.153597677374894, + "fos_yielding": 3.2382207176344906, + "deflection": 0.001868242536112185, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.179)" + }, + "parent_node_id": "node_1940", + "improvement_over_parent": null + }, + "node_1942": { + "node_id": "node_1942", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.14 kg\n Factor of Safety: 1.47\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.14459356251703, + "fos_buckling": 1.465467072718035, + "fos_yielding": 4.151992806565309, + "deflection": 0.0014598764767610726, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_1941", + "improvement_over_parent": null + }, + "node_1943": { + "node_id": "node_1943", + "content": "MODIFICATION: Increase 5 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.98 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.98217830386733, + "fos_buckling": 1.5664274146409718, + "fos_yielding": 4.146245885842942, + "deflection": 0.0014521805390430298, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.468)" + }, + "parent_node_id": "node_1942", + "improvement_over_parent": null + }, + "node_1944": { + "node_id": "node_1944", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1943", + "improvement_over_parent": null + }, + "node_1945": { + "node_id": "node_1945", + "content": "INITIAL DESIGN (Trace 282)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1946": { + "node_id": "node_1946", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n\nPerformance:\n Mass: 122.48 kg\n Factor of Safety: 0.05\n Max Deflection: 1.33e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 122.4805180211299, + "fos_buckling": 0.04711270255439915, + "fos_yielding": 1.1149741923518586, + "deflection": 0.013302701948853217, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004198)" + }, + "parent_node_id": "node_1945", + "improvement_over_parent": null + }, + "node_1947": { + "node_id": "node_1947", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n\nPerformance:\n Mass: 138.87 kg\n Factor of Safety: 0.05\n Max Deflection: 1.17e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.87396265436394, + "fos_buckling": 0.0524832087106035, + "fos_yielding": 1.2637356982388661, + "deflection": 0.01173936520739027, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_1946", + "improvement_over_parent": null + }, + "node_1948": { + "node_id": "node_1948", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 174.92 kg\n Factor of Safety: 1.00\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.92306178092673, + "fos_buckling": 0.9983422622445424, + "fos_yielding": 2.802921460244064, + "deflection": 0.0017972000148451964, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004752)" + }, + "parent_node_id": "node_1947", + "improvement_over_parent": null + }, + "node_1949": { + "node_id": "node_1949", + "content": "MODIFICATION: Increase 5 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 183.44 kg\n Factor of Safety: 1.29\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.4397299939542, + "fos_buckling": 1.2916308675283181, + "fos_yielding": 3.552644082581479, + "deflection": 0.0017966884887045738, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.534)" + }, + "parent_node_id": "node_1948", + "improvement_over_parent": null + }, + "node_1950": { + "node_id": "node_1950", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.18 kg\n Factor of Safety: 1.49\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.17535927209119, + "fos_buckling": 1.485299365604701, + "fos_yielding": 4.203025070187825, + "deflection": 0.0015199761033767528, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_1949", + "improvement_over_parent": null + }, + "node_1951": { + "node_id": "node_1951", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 221.57 kg\n Factor of Safety: 1.48\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.57231299501814, + "fos_buckling": 1.482245602833463, + "fos_yielding": 4.157836773466277, + "deflection": 0.001457197379025929, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001784)" + }, + "parent_node_id": "node_1950", + "improvement_over_parent": null + }, + "node_1952": { + "node_id": "node_1952", + "content": "MODIFICATION: Increase 5 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0082)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 233.19 kg\n Factor of Safety: 1.17\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 233.18817309704121, + "fos_buckling": 1.1742734051649346, + "fos_yielding": 4.164850717652669, + "deflection": 0.0014402955899509844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.439)" + }, + "parent_node_id": "node_1951", + "improvement_over_parent": null + }, + "node_1953": { + "node_id": "node_1953", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1952", + "improvement_over_parent": null + }, + "node_1954": { + "node_id": "node_1954", + "content": "INITIAL DESIGN (Trace 283)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 134.91 kg\n Factor of Safety: 0.88\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.9126173220447, + "fos_buckling": 0.8792606760169367, + "fos_yielding": 2.7467790951682534, + "deflection": 0.0024074081185115484, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1955": { + "node_id": "node_1955", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 161.90 kg\n Factor of Safety: 1.04\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.90232034100467, + "fos_buckling": 1.036428169075044, + "fos_yielding": 3.2938048908034228, + "deflection": 0.0020087316125094, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.214)" + }, + "parent_node_id": "node_1954", + "improvement_over_parent": null + }, + "node_1956": { + "node_id": "node_1956", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 168.66 kg\n Factor of Safety: 0.93\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.66014790633656, + "fos_buckling": 0.9277761980551533, + "fos_yielding": 3.2408372463410844, + "deflection": 0.0019616125840827324, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001971)" + }, + "parent_node_id": "node_1955", + "improvement_over_parent": null + }, + "node_1957": { + "node_id": "node_1957", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 215.22 kg\n Factor of Safety: 1.13\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.2166154218454, + "fos_buckling": 1.1316102559018453, + "fos_yielding": 4.129364925836214, + "deflection": 0.0015406837727575183, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.302)" + }, + "parent_node_id": "node_1956", + "improvement_over_parent": null + }, + "node_1958": { + "node_id": "node_1958", + "content": "MODIFICATION: Increase 7 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.36530569547847, + "fos_buckling": 1.5684079363043513, + "fos_yielding": 4.1526745816695945, + "deflection": 0.0014496582666424906, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.252)" + }, + "parent_node_id": "node_1957", + "improvement_over_parent": null + }, + "node_1959": { + "node_id": "node_1959", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1958", + "improvement_over_parent": null + }, + "node_1960": { + "node_id": "node_1960", + "content": "INITIAL DESIGN (Trace 284)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 156.29 kg\n Factor of Safety: 0.06\n Max Deflection: 7.54e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.28566036616496, + "fos_buckling": 0.05530492430128279, + "fos_yielding": 1.2974112280625552, + "deflection": 0.007543920458173778, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1961": { + "node_id": "node_1961", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 195.43 kg\n Factor of Safety: 1.03\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.43094587503836, + "fos_buckling": 1.0262473140618842, + "fos_yielding": 3.7314275602881226, + "deflection": 0.0016301517471443126, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005129)" + }, + "parent_node_id": "node_1960", + "improvement_over_parent": null + }, + "node_1962": { + "node_id": "node_1962", + "content": "MODIFICATION: Increase 3 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 196.66 kg\n Factor of Safety: 1.36\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.66084541812583, + "fos_buckling": 1.3564196699453328, + "fos_yielding": 3.7331638314951134, + "deflection": 0.0016236312595707672, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.650)" + }, + "parent_node_id": "node_1961", + "improvement_over_parent": null + }, + "node_1963": { + "node_id": "node_1963", + "content": "MODIFICATION: Increase 5 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 197.63 kg\n Factor of Safety: 1.30\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 197.62659196685917, + "fos_buckling": 1.298814404727558, + "fos_yielding": 3.7308138535178124, + "deflection": 0.0016198082824144934, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.230)" + }, + "parent_node_id": "node_1962", + "improvement_over_parent": null + }, + "node_1964": { + "node_id": "node_1964", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 220.13 kg\n Factor of Safety: 1.42\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.13389499713466, + "fos_buckling": 1.423115789592127, + "fos_yielding": 4.1535577904050855, + "deflection": 0.0014563978040355913, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.125)" + }, + "parent_node_id": "node_1963", + "improvement_over_parent": null + }, + "node_1965": { + "node_id": "node_1965", + "content": "MODIFICATION: Increase 8 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 222.75 kg\n Factor of Safety: 1.34\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.75132203959262, + "fos_buckling": 1.3351963288465027, + "fos_yielding": 4.154186674234597, + "deflection": 0.0014538527685658883, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.235)" + }, + "parent_node_id": "node_1964", + "improvement_over_parent": null + }, + "node_1966": { + "node_id": "node_1966", + "content": "MODIFICATION: Increase 3 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 224.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 224.31886477358617, + "fos_buckling": 1.5693845194461604, + "fos_yielding": 4.155459330686844, + "deflection": 0.0014492293776874703, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.477)" + }, + "parent_node_id": "node_1965", + "improvement_over_parent": null + }, + "node_1967": { + "node_id": "node_1967", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1966", + "improvement_over_parent": null + }, + "node_1968": { + "node_id": "node_1968", + "content": "INITIAL DESIGN (Trace 285)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 131.87 kg\n Factor of Safety: 0.11\n Max Deflection: 7.08e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.86871251771936, + "fos_buckling": 0.10542234678731194, + "fos_yielding": 1.3733178888924644, + "deflection": 0.007080890833720154, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1969": { + "node_id": "node_1969", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 165.66 kg\n Factor of Safety: 0.97\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.65905106071708, + "fos_buckling": 0.9720890488875524, + "fos_yielding": 2.3703249875547576, + "deflection": 0.0018641499144592302, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004432)" + }, + "parent_node_id": "node_1968", + "improvement_over_parent": null + }, + "node_1970": { + "node_id": "node_1970", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.49 kg\n Factor of Safety: 1.20\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.48819508978383, + "fos_buckling": 1.2031347209196845, + "fos_yielding": 3.0107570344387624, + "deflection": 0.0014792991021778483, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.289)" + }, + "parent_node_id": "node_1969", + "improvement_over_parent": null + }, + "node_1971": { + "node_id": "node_1971", + "content": "MODIFICATION: Increase 4 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.45 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.44967762455926, + "fos_buckling": 1.5512788926963665, + "fos_yielding": 4.155323884432208, + "deflection": 0.001456070022232039, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.435)" + }, + "parent_node_id": "node_1970", + "improvement_over_parent": null + }, + "node_1972": { + "node_id": "node_1972", + "content": "MODIFICATION: Increase 9 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.45 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.45263953004002, + "fos_buckling": 1.5690429589750352, + "fos_yielding": 4.157233393635701, + "deflection": 0.001449329584035154, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.513)" + }, + "parent_node_id": "node_1971", + "improvement_over_parent": null + }, + "node_1973": { + "node_id": "node_1973", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1972", + "improvement_over_parent": null + }, + "node_1974": { + "node_id": "node_1974", + "content": "INITIAL DESIGN (Trace 286)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1975": { + "node_id": "node_1975", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 204.56 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.55709913441294, + "fos_buckling": 1.4595233644802716, + "fos_yielding": 4.182449083354115, + "deflection": 0.0015207944207637554, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_1974", + "improvement_over_parent": null + }, + "node_1976": { + "node_id": "node_1976", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 212.76 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.76218298541286, + "fos_buckling": 1.4819022552959267, + "fos_yielding": 4.200356198777439, + "deflection": 0.0015205382009271307, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001959)" + }, + "parent_node_id": "node_1975", + "improvement_over_parent": null + }, + "node_1977": { + "node_id": "node_1977", + "content": "MODIFICATION: Increase 8 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0038)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 215.33 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.33219906360904, + "fos_buckling": 1.4823473106803329, + "fos_yielding": 4.2010731742000464, + "deflection": 0.0015209436617226013, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.580)" + }, + "parent_node_id": "node_1976", + "improvement_over_parent": null + }, + "node_1978": { + "node_id": "node_1978", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0038)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 221.49 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.48601380190686, + "fos_buckling": 1.5543656312842344, + "fos_yielding": 4.14993442763199, + "deflection": 0.001455746621975855, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_1977", + "improvement_over_parent": null + }, + "node_1979": { + "node_id": "node_1979", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1978", + "improvement_over_parent": null + }, + "node_1980": { + "node_id": "node_1980", + "content": "INITIAL DESIGN (Trace 287)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 112.25 kg\n Factor of Safety: 1.09\n Max Deflection: 7.81e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.2468844541425, + "fos_buckling": 1.0905425915457407, + "fos_yielding": 2.8652500788604485, + "deflection": 7808024824404.152, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1981": { + "node_id": "node_1981", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 135.32 kg\n Factor of Safety: 1.35\n Max Deflection: 5.15e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.31891581794565, + "fos_buckling": 1.3495802771922927, + "fos_yielding": 3.4389938071690875, + "deflection": 5151430464221.634, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.221)" + }, + "parent_node_id": "node_1980", + "improvement_over_parent": null + }, + "node_1982": { + "node_id": "node_1982", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 145.63 kg\n Factor of Safety: 0.11\n Max Deflection: 5.87e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.6289620450913, + "fos_buckling": 0.10875558025816019, + "fos_yielding": 1.770019071758508, + "deflection": 0.005874649547193581, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002500)" + }, + "parent_node_id": "node_1981", + "improvement_over_parent": null + }, + "node_1983": { + "node_id": "node_1983", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 177.38 kg\n Factor of Safety: 0.13\n Max Deflection: 4.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.37626898752444, + "fos_buckling": 0.1279987985150462, + "fos_yielding": 2.1504021777362703, + "deflection": 0.004832925841376245, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_1982", + "improvement_over_parent": null + }, + "node_1984": { + "node_id": "node_1984", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 207.88 kg\n Factor of Safety: 1.02\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.8841436173972, + "fos_buckling": 1.0249846880053248, + "fos_yielding": 4.164756232138164, + "deflection": 0.0016419012684085299, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003973)" + }, + "parent_node_id": "node_1983", + "improvement_over_parent": null + }, + "node_1985": { + "node_id": "node_1985", + "content": "MODIFICATION: Increase 1 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 211.24 kg\n Factor of Safety: 1.14\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.23501574105057, + "fos_buckling": 1.1431238412971403, + "fos_yielding": 4.162058212916773, + "deflection": 0.0015944698560838848, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.259)" + }, + "parent_node_id": "node_1984", + "improvement_over_parent": null + }, + "node_1986": { + "node_id": "node_1986", + "content": "MODIFICATION: Increase 10 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.39 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.38726767319255, + "fos_buckling": 1.5683875144384594, + "fos_yielding": 4.1541196453836085, + "deflection": 0.001449641261034184, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.437)" + }, + "parent_node_id": "node_1985", + "improvement_over_parent": null + }, + "node_1987": { + "node_id": "node_1987", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1986", + "improvement_over_parent": null + }, + "node_1988": { + "node_id": "node_1988", + "content": "INITIAL DESIGN (Trace 288)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 111.82 kg\n Factor of Safety: 0.05\n Max Deflection: 8.82e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.82482456654172, + "fos_buckling": 0.045395715905410625, + "fos_yielding": 1.054956726697499, + "deflection": 0.008818893687484956, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1989": { + "node_id": "node_1989", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 120.75 kg\n Factor of Safety: 0.05\n Max Deflection: 8.81e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.7497351845643, + "fos_buckling": 0.045352634623199044, + "fos_yielding": 1.053955555385242, + "deflection": 0.008809185662461838, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002142)" + }, + "parent_node_id": "node_1988", + "improvement_over_parent": null + }, + "node_1990": { + "node_id": "node_1990", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 139.43 kg\n Factor of Safety: 0.05\n Max Deflection: 7.64e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.43002483616027, + "fos_buckling": 0.05128980812683029, + "fos_yielding": 1.2147597049147205, + "deflection": 0.007638211743007633, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.166)" + }, + "parent_node_id": "node_1989", + "improvement_over_parent": null + }, + "node_1991": { + "node_id": "node_1991", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 169.92 kg\n Factor of Safety: 0.06\n Max Deflection: 6.28e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.91635862966837, + "fos_buckling": 0.06036896341019487, + "fos_yielding": 1.475856702926926, + "deflection": 0.0062802531559882, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_1990", + "improvement_over_parent": null + }, + "node_1992": { + "node_id": "node_1992", + "content": "MODIFICATION: Increase 3 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 170.62 kg\n Factor of Safety: 0.06\n Max Deflection: 6.28e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.6195116588437, + "fos_buckling": 0.06036446631053163, + "fos_yielding": 1.4757467610908102, + "deflection": 0.006279888067193731, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.269)" + }, + "parent_node_id": "node_1991", + "improvement_over_parent": null + }, + "node_1993": { + "node_id": "node_1993", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.23 kg\n Factor of Safety: 1.31\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.2305659016044, + "fos_buckling": 1.3074882312648082, + "fos_yielding": 3.314765553622754, + "deflection": 0.001470464044150585, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_1992", + "improvement_over_parent": null + }, + "node_1994": { + "node_id": "node_1994", + "content": "MODIFICATION: Increase 3 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 215.93 kg\n Factor of Safety: 1.31\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.92866991651698, + "fos_buckling": 1.3079402342890043, + "fos_yielding": 3.3159114790841935, + "deflection": 0.0014657561602223516, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.536)" + }, + "parent_node_id": "node_1993", + "improvement_over_parent": null + }, + "node_1995": { + "node_id": "node_1995", + "content": "MODIFICATION: Increase 4 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.19 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1881913771885, + "fos_buckling": 1.5674682073169206, + "fos_yielding": 4.150172778122072, + "deflection": 0.001450852477000259, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.287)" + }, + "parent_node_id": "node_1994", + "improvement_over_parent": null + }, + "node_1996": { + "node_id": "node_1996", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_1995", + "improvement_over_parent": null + }, + "node_1997": { + "node_id": "node_1997", + "content": "INITIAL DESIGN (Trace 289)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n\nPerformance:\n Mass: 101.43 kg\n Factor of Safety: 0.56\n Max Deflection: 3.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 101.4278384318206, + "fos_buckling": 0.562943033786396, + "fos_yielding": 1.9241767888765746, + "deflection": 0.0032323727736926324, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_1998": { + "node_id": "node_1998", + "content": "MODIFICATION: Increase 0 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n\nPerformance:\n Mass: 103.04 kg\n Factor of Safety: 0.77\n Max Deflection: 3.11e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.04046984809983, + "fos_buckling": 0.7653920240387947, + "fos_yielding": 1.930277995386299, + "deflection": 0.0031088772582582008, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.250)" + }, + "parent_node_id": "node_1997", + "improvement_over_parent": null + }, + "node_1999": { + "node_id": "node_1999", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 135.52 kg\n Factor of Safety: 0.98\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.51665960510567, + "fos_buckling": 0.9766549622493419, + "fos_yielding": 2.5370986804269515, + "deflection": 0.002368805274552895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.332)" + }, + "parent_node_id": "node_1998", + "improvement_over_parent": null + }, + "node_2000": { + "node_id": "node_2000", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 176.32 kg\n Factor of Safety: 1.22\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.3169514489777, + "fos_buckling": 1.2231729688763486, + "fos_yielding": 3.2983819816514677, + "deflection": 0.0018254512603607346, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.323)" + }, + "parent_node_id": "node_1999", + "improvement_over_parent": null + }, + "node_2001": { + "node_id": "node_2001", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.42 kg\n Factor of Safety: 1.48\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.42412112106157, + "fos_buckling": 1.4776031073113758, + "fos_yielding": 4.157230603731907, + "deflection": 0.0014513462907833794, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_2000", + "improvement_over_parent": null + }, + "node_2002": { + "node_id": "node_2002", + "content": "MODIFICATION: Increase 2 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3689878874507, + "fos_buckling": 1.5686211536567456, + "fos_yielding": 4.1533459739915575, + "deflection": 0.001449711360018213, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.397)" + }, + "parent_node_id": "node_2001", + "improvement_over_parent": null + }, + "node_2003": { + "node_id": "node_2003", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2002", + "improvement_over_parent": null + }, + "node_2004": { + "node_id": "node_2004", + "content": "INITIAL DESIGN (Trace 290)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 144.79 kg\n Factor of Safety: 0.99\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.79191097099445, + "fos_buckling": 0.9918380978991534, + "fos_yielding": 2.783503228646737, + "deflection": 0.002093208308093577, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2005": { + "node_id": "node_2005", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 154.00 kg\n Factor of Safety: 0.97\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.99784705221353, + "fos_buckling": 0.9735650215206377, + "fos_yielding": 2.7322215051430305, + "deflection": 0.002030765396477767, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002214)" + }, + "parent_node_id": "node_2004", + "improvement_over_parent": null + }, + "node_2006": { + "node_id": "node_2006", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 190.41 kg\n Factor of Safety: 1.18\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.40856927487894, + "fos_buckling": 1.1793450973063364, + "fos_yielding": 3.3864182423117093, + "deflection": 0.0016472174510843514, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.256)" + }, + "parent_node_id": "node_2005", + "improvement_over_parent": null + }, + "node_2007": { + "node_id": "node_2007", + "content": "MODIFICATION: Increase 2 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 191.44 kg\n Factor of Safety: 1.18\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.43641474805722, + "fos_buckling": 1.1779498741860295, + "fos_yielding": 3.3824119433602884, + "deflection": 0.0016450624022990657, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.305)" + }, + "parent_node_id": "node_2006", + "improvement_over_parent": null + }, + "node_2008": { + "node_id": "node_2008", + "content": "MODIFICATION: Increase 7 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 192.83 kg\n Factor of Safety: 1.18\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.82897703656081, + "fos_buckling": 1.1779109946644095, + "fos_yielding": 3.3823003031613608, + "deflection": 0.0016452400870612934, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.236)" + }, + "parent_node_id": "node_2007", + "improvement_over_parent": null + }, + "node_2009": { + "node_id": "node_2009", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 212.89 kg\n Factor of Safety: 1.29\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.8867723634402, + "fos_buckling": 1.2858498884508192, + "fos_yielding": 3.7397402628888177, + "deflection": 0.0014924556956319379, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.114)" + }, + "parent_node_id": "node_2008", + "improvement_over_parent": null + }, + "node_2010": { + "node_id": "node_2010", + "content": "MODIFICATION: Increase 5 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 219.85 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.84624947558504, + "fos_buckling": 1.5232098267127305, + "fos_yielding": 4.197787800824289, + "deflection": 0.0014696783417711635, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.325)" + }, + "parent_node_id": "node_2009", + "improvement_over_parent": null + }, + "node_2011": { + "node_id": "node_2011", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.40 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.40065681128306, + "fos_buckling": 1.5688688701480509, + "fos_yielding": 4.154016918609757, + "deflection": 0.0014495153803886962, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2010", + "improvement_over_parent": null + }, + "node_2012": { + "node_id": "node_2012", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2011", + "improvement_over_parent": null + }, + "node_2013": { + "node_id": "node_2013", + "content": "INITIAL DESIGN (Trace 291)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2014": { + "node_id": "node_2014", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 210.71 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.7101995994855, + "fos_buckling": 1.3392381279372176, + "fos_yielding": 4.1382395123962565, + "deflection": 0.0014958364087349614, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2013", + "improvement_over_parent": null + }, + "node_2015": { + "node_id": "node_2015", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25855721958175, + "fos_buckling": 1.5680092556121514, + "fos_yielding": 4.15134237523279, + "deflection": 0.001450439482037813, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2014", + "improvement_over_parent": null + }, + "node_2016": { + "node_id": "node_2016", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2015", + "improvement_over_parent": null + }, + "node_2017": { + "node_id": "node_2017", + "content": "INITIAL DESIGN (Trace 292)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 150.72 kg\n Factor of Safety: 1.11\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.71676191910532, + "fos_buckling": 1.1114803217815659, + "fos_yielding": 3.0354351038361616, + "deflection": 0.0021951992160992844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2018": { + "node_id": "node_2018", + "content": "MODIFICATION: Increase 6 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 151.55 kg\n Factor of Safety: 1.11\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.55203529684303, + "fos_buckling": 1.1113818627491674, + "fos_yielding": 3.035273925630365, + "deflection": 0.0021958208546835364, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.230)" + }, + "parent_node_id": "node_2017", + "improvement_over_parent": null + }, + "node_2019": { + "node_id": "node_2019", + "content": "MODIFICATION: Increase 6 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 153.14 kg\n Factor of Safety: 1.11\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.14479376751854, + "fos_buckling": 1.1111941624259851, + "fos_yielding": 3.034966627039749, + "deflection": 0.0021970062391901603, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.366)" + }, + "parent_node_id": "node_2018", + "improvement_over_parent": null + }, + "node_2020": { + "node_id": "node_2020", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n\nPerformance:\n Mass: 155.71 kg\n Factor of Safety: 0.87\n Max Deflection: 2.12e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.71411285838974, + "fos_buckling": 0.8699204088149853, + "fos_yielding": 2.9872715736326043, + "deflection": 0.002116782439143679, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001386)" + }, + "parent_node_id": "node_2019", + "improvement_over_parent": null + }, + "node_2021": { + "node_id": "node_2021", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 184.27 kg\n Factor of Safety: 1.00\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.27076050339943, + "fos_buckling": 0.9978553092454452, + "fos_yielding": 3.532767941711249, + "deflection": 0.0017918893833411163, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.198)" + }, + "parent_node_id": "node_2020", + "improvement_over_parent": null + }, + "node_2022": { + "node_id": "node_2022", + "content": "MODIFICATION: Increase 0 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 186.55 kg\n Factor of Safety: 1.18\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.54503559600482, + "fos_buckling": 1.177138801808236, + "fos_yielding": 3.5412203895008454, + "deflection": 0.0017458372905376496, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.188)" + }, + "parent_node_id": "node_2021", + "improvement_over_parent": null + }, + "node_2023": { + "node_id": "node_2023", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 218.13 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.13164876303293, + "fos_buckling": 1.324071036900742, + "fos_yielding": 4.138341587385131, + "deflection": 0.0014962995023687683, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.186)" + }, + "parent_node_id": "node_2022", + "improvement_over_parent": null + }, + "node_2024": { + "node_id": "node_2024", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3059916397616, + "fos_buckling": 1.5682326593361153, + "fos_yielding": 4.152087334595318, + "deflection": 0.0014501125046877661, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2023", + "improvement_over_parent": null + }, + "node_2025": { + "node_id": "node_2025", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2024", + "improvement_over_parent": null + }, + "node_2026": { + "node_id": "node_2026", + "content": "INITIAL DESIGN (Trace 293)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2027": { + "node_id": "node_2027", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 108.59 kg\n Factor of Safety: 0.80\n Max Deflection: 4.49e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.58600250392584, + "fos_buckling": 0.7999256511457803, + "fos_yielding": 2.3645245618138957, + "deflection": 44876082520135.51, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001117)" + }, + "parent_node_id": "node_2026", + "improvement_over_parent": null + }, + "node_2028": { + "node_id": "node_2028", + "content": "MODIFICATION: Increase 2 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 110.59 kg\n Factor of Safety: 0.02\n Max Deflection: 8.51e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.58990876736675, + "fos_buckling": 0.015359343191088316, + "fos_yielding": 0.2703169871072125, + "deflection": 85107978253815.77, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.506)" + }, + "parent_node_id": "node_2027", + "improvement_over_parent": null + }, + "node_2029": { + "node_id": "node_2029", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 118.04 kg\n Factor of Safety: 0.04\n Max Deflection: 1.49e-02 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 118.0415265138595, + "fos_buckling": 0.0384500667164865, + "fos_yielding": 0.7690010706867901, + "deflection": 0.014878484708790093, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002190)" + }, + "parent_node_id": "node_2028", + "improvement_over_parent": null + }, + "node_2030": { + "node_id": "node_2030", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n\nPerformance:\n Mass: 155.77 kg\n Factor of Safety: 0.13\n Max Deflection: 5.57e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.77063547436234, + "fos_buckling": 0.12916191062467786, + "fos_yielding": 1.8099496936846335, + "deflection": 0.005572191913567901, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004928)" + }, + "parent_node_id": "node_2029", + "improvement_over_parent": null + }, + "node_2031": { + "node_id": "node_2031", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0036)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 179.99 kg\n Factor of Safety: 0.15\n Max Deflection: 4.83e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.9914246533935, + "fos_buckling": 0.1472840154991761, + "fos_yielding": 2.0990724066199284, + "deflection": 0.004828383178906659, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_2030", + "improvement_over_parent": null + }, + "node_2032": { + "node_id": "node_2032", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0036)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.64 kg\n Factor of Safety: 1.46\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.6433930047669, + "fos_buckling": 1.4598076498272408, + "fos_yielding": 4.161392897512197, + "deflection": 0.0014566748969574179, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_2031", + "improvement_over_parent": null + }, + "node_2033": { + "node_id": "node_2033", + "content": "MODIFICATION: Increase 5 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0036)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0082)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 234.05 kg\n Factor of Safety: 1.14\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 234.05354396955735, + "fos_buckling": 1.1421269661794629, + "fos_yielding": 4.1680423151143735, + "deflection": 0.0014383996765198772, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.431)" + }, + "parent_node_id": "node_2032", + "improvement_over_parent": null + }, + "node_2034": { + "node_id": "node_2034", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2033", + "improvement_over_parent": null + }, + "node_2035": { + "node_id": "node_2035", + "content": "INITIAL DESIGN (Trace 294)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2036": { + "node_id": "node_2036", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 168.41 kg\n Factor of Safety: 1.17\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.40731564088387, + "fos_buckling": 1.166728054906828, + "fos_yielding": 2.9072401056447004, + "deflection": 0.0018187459596429192, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001206)" + }, + "parent_node_id": "node_2035", + "improvement_over_parent": null + }, + "node_2037": { + "node_id": "node_2037", + "content": "MODIFICATION: Increase 2 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 169.51 kg\n Factor of Safety: 1.17\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.5140429553388, + "fos_buckling": 1.166728054906828, + "fos_yielding": 2.9072401056447004, + "deflection": 0.0018154314687950587, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.292)" + }, + "parent_node_id": "node_2036", + "improvement_over_parent": null + }, + "node_2038": { + "node_id": "node_2038", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 210.34 kg\n Factor of Safety: 1.41\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.33794594629134, + "fos_buckling": 1.4091349594191347, + "fos_yielding": 3.6156918205544057, + "deflection": 0.0014677326538749546, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.264)" + }, + "parent_node_id": "node_2037", + "improvement_over_parent": null + }, + "node_2039": { + "node_id": "node_2039", + "content": "MODIFICATION: Increase 4 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0030)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 211.30 kg\n Factor of Safety: 1.41\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.30495098150655, + "fos_buckling": 1.4091349594191347, + "fos_yielding": 3.6156918205544057, + "deflection": 0.00146642057492936, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.176)" + }, + "parent_node_id": "node_2038", + "improvement_over_parent": null + }, + "node_2040": { + "node_id": "node_2040", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0031)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0030)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.92 kg\n Factor of Safety: 1.40\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.9180555962672, + "fos_buckling": 1.4004505227860569, + "fos_yielding": 3.5934084712623786, + "deflection": 0.0014558791373660185, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2039", + "improvement_over_parent": null + }, + "node_2041": { + "node_id": "node_2041", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2040", + "improvement_over_parent": null + }, + "node_2042": { + "node_id": "node_2042", + "content": "INITIAL DESIGN (Trace 295)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 121.52 kg\n Factor of Safety: 0.96\n Max Deflection: 2.65e+14 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.51601660725038, + "fos_buckling": 0.9624392086995053, + "fos_yielding": 0.20213797545085518, + "deflection": 264912312262243.7, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2043": { + "node_id": "node_2043", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 123.69 kg\n Factor of Safety: 0.96\n Max Deflection: 2.48e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.6864545273085, + "fos_buckling": 0.9595883274468431, + "fos_yielding": 2.560585843960874, + "deflection": 0.002480223127590143, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001159)" + }, + "parent_node_id": "node_2042", + "improvement_over_parent": null + }, + "node_2044": { + "node_id": "node_2044", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 155.37 kg\n Factor of Safety: 1.17\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.36749590746567, + "fos_buckling": 1.1708128277943763, + "fos_yielding": 3.213281951202171, + "deflection": 0.001977857451249824, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.274)" + }, + "parent_node_id": "node_2043", + "improvement_over_parent": null + }, + "node_2045": { + "node_id": "node_2045", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 160.09 kg\n Factor of Safety: 1.17\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.0889035401847, + "fos_buckling": 1.1696410596585969, + "fos_yielding": 3.1825880451319293, + "deflection": 0.0019481834569668264, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001925)" + }, + "parent_node_id": "node_2044", + "improvement_over_parent": null + }, + "node_2046": { + "node_id": "node_2046", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 208.70 kg\n Factor of Safety: 1.46\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.69944059273277, + "fos_buckling": 1.4577347593028644, + "fos_yielding": 4.144433676415692, + "deflection": 0.001499683556840815, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.333)" + }, + "parent_node_id": "node_2045", + "improvement_over_parent": null + }, + "node_2047": { + "node_id": "node_2047", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 221.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.24779821282903, + "fos_buckling": 1.569318613061709, + "fos_yielding": 4.156195243797211, + "deflection": 0.0014528995323694392, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2046", + "improvement_over_parent": null + }, + "node_2048": { + "node_id": "node_2048", + "content": "MODIFICATION: Increase 8 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 222.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.2665903533503, + "fos_buckling": 1.568626252741261, + "fos_yielding": 4.15391383876922, + "deflection": 0.001452066719311608, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.326)" + }, + "parent_node_id": "node_2047", + "improvement_over_parent": null + }, + "node_2049": { + "node_id": "node_2049", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2048", + "improvement_over_parent": null + }, + "node_2050": { + "node_id": "node_2050", + "content": "INITIAL DESIGN (Trace 296)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 144.46 kg\n Factor of Safety: 1.33\n Max Deflection: 8.47e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.46117720479745, + "fos_buckling": 1.3312224604724228, + "fos_yielding": 3.796669198419994, + "deflection": 8470638514957.747, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2051": { + "node_id": "node_2051", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 149.14 kg\n Factor of Safety: 0.12\n Max Deflection: 1.13e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.14143522376023, + "fos_buckling": 0.11523995390503554, + "fos_yielding": 2.1625358968577, + "deflection": 11332570904775.67, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002129)" + }, + "parent_node_id": "node_2050", + "improvement_over_parent": null + }, + "node_2052": { + "node_id": "node_2052", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 156.93 kg\n Factor of Safety: 0.06\n Max Deflection: 1.09e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.9309930305513, + "fos_buckling": 0.055683835248320476, + "fos_yielding": 1.3383806446163087, + "deflection": 0.010891601196420079, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002298)" + }, + "parent_node_id": "node_2051", + "improvement_over_parent": null + }, + "node_2053": { + "node_id": "node_2053", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n\nPerformance:\n Mass: 196.38 kg\n Factor of Safety: 1.37\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.37799300326853, + "fos_buckling": 1.3671184333510635, + "fos_yielding": 3.8024210216595407, + "deflection": 0.0016793641240617036, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005172)" + }, + "parent_node_id": "node_2052", + "improvement_over_parent": null + }, + "node_2054": { + "node_id": "node_2054", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 201.94 kg\n Factor of Safety: 1.44\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.94364267222673, + "fos_buckling": 1.4446134743792494, + "fos_yielding": 3.7564109516654365, + "deflection": 0.0016013698387503715, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002299)" + }, + "parent_node_id": "node_2053", + "improvement_over_parent": null + }, + "node_2055": { + "node_id": "node_2055", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25944096218382, + "fos_buckling": 1.5680065257932472, + "fos_yielding": 4.151332074546831, + "deflection": 0.0014504241580754632, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.116)" + }, + "parent_node_id": "node_2054", + "improvement_over_parent": null + }, + "node_2056": { + "node_id": "node_2056", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2055", + "improvement_over_parent": null + }, + "node_2057": { + "node_id": "node_2057", + "content": "INITIAL DESIGN (Trace 297)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0024)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 99.85 kg\n Factor of Safety: 0.04\n Max Deflection: 7.74e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 99.85484459427794, + "fos_buckling": 0.042103180525578335, + "fos_yielding": 0.6767424242642062, + "deflection": 77362724801176.0, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2058": { + "node_id": "node_2058", + "content": "MODIFICATION: Increase 4 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 107.41 kg\n Factor of Safety: 0.04\n Max Deflection: 7.74e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.4057599154123, + "fos_buckling": 0.042103180525578335, + "fos_yielding": 0.6767424242642062, + "deflection": 77362724801176.0, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.548)" + }, + "parent_node_id": "node_2057", + "improvement_over_parent": null + }, + "node_2059": { + "node_id": "node_2059", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n\nPerformance:\n Mass: 134.89 kg\n Factor of Safety: 1.03\n Max Deflection: 2.32e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.89312923403827, + "fos_buckling": 1.0303979770734712, + "fos_yielding": 2.648531159728402, + "deflection": 0.0023197777418523177, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003513)" + }, + "parent_node_id": "node_2058", + "improvement_over_parent": null + }, + "node_2060": { + "node_id": "node_2060", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 172.19 kg\n Factor of Safety: 1.27\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.18728593190008, + "fos_buckling": 1.272833291471837, + "fos_yielding": 3.379186461052296, + "deflection": 0.0018220393741320313, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.297)" + }, + "parent_node_id": "node_2059", + "improvement_over_parent": null + }, + "node_2061": { + "node_id": "node_2061", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 213.92 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 213.9168211920026, + "fos_buckling": 1.5226677871182266, + "fos_yielding": 4.195905946431063, + "deflection": 0.001470849854000217, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.266)" + }, + "parent_node_id": "node_2060", + "improvement_over_parent": null + }, + "node_2062": { + "node_id": "node_2062", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 222.53 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.52992580676326, + "fos_buckling": 1.5679876077137298, + "fos_yielding": 4.1529742140627555, + "deflection": 0.0014521856922893395, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2061", + "improvement_over_parent": null + }, + "node_2063": { + "node_id": "node_2063", + "content": "MODIFICATION: Increase 2 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.15643639211382, + "fos_buckling": 1.567294820914118, + "fos_yielding": 4.150579557597178, + "deflection": 0.0014511876546452777, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.235)" + }, + "parent_node_id": "node_2062", + "improvement_over_parent": null + }, + "node_2064": { + "node_id": "node_2064", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2063", + "improvement_over_parent": null + }, + "node_2065": { + "node_id": "node_2065", + "content": "INITIAL DESIGN (Trace 298)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0017)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0005)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0006)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0023)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0022)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n\nPerformance:\n Mass: 88.77 kg\n Factor of Safety: 0.60\n Max Deflection: 3.58e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 88.77379441660298, + "fos_buckling": 0.5986638015608148, + "fos_yielding": 1.680184013994365, + "deflection": 0.003584499137426019, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2066": { + "node_id": "node_2066", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0007)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 103.63 kg\n Factor of Safety: 0.69\n Max Deflection: 3.07e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.63001517518707, + "fos_buckling": 0.6902822848191674, + "fos_yielding": 1.9607407714045726, + "deflection": 0.0030736548410492176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.174)" + }, + "parent_node_id": "node_2065", + "improvement_over_parent": null + }, + "node_2067": { + "node_id": "node_2067", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 124.87 kg\n Factor of Safety: 0.82\n Max Deflection: 2.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.8698434335165, + "fos_buckling": 0.8172233140807181, + "fos_yielding": 2.361536065291466, + "deflection": 0.0025544290018259595, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_2066", + "improvement_over_parent": null + }, + "node_2068": { + "node_id": "node_2068", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 139.65 kg\n Factor of Safety: 0.90\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.65159461689126, + "fos_buckling": 0.9028158381915189, + "fos_yielding": 2.640247210874111, + "deflection": 0.002286284972091673, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.125)" + }, + "parent_node_id": "node_2067", + "improvement_over_parent": null + }, + "node_2069": { + "node_id": "node_2069", + "content": "MODIFICATION: Increase 3 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 140.83 kg\n Factor of Safety: 0.94\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.82911765043443, + "fos_buckling": 0.9361289870045132, + "fos_yielding": 2.6410849910353904, + "deflection": 0.0022782681544844833, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.590)" + }, + "parent_node_id": "node_2068", + "improvement_over_parent": null + }, + "node_2070": { + "node_id": "node_2070", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 171.34 kg\n Factor of Safety: 1.11\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.34357738084051, + "fos_buckling": 1.1099810004605022, + "fos_yielding": 3.2114680689771387, + "deflection": 0.0018762309286698483, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_2069", + "improvement_over_parent": null + }, + "node_2071": { + "node_id": "node_2071", + "content": "MODIFICATION: Increase 2 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 172.33 kg\n Factor of Safety: 1.26\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.32982203163257, + "fos_buckling": 1.2640583411815292, + "fos_yielding": 3.2072029989855873, + "deflection": 0.001873095041632591, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.600)" + }, + "parent_node_id": "node_2070", + "improvement_over_parent": null + }, + "node_2072": { + "node_id": "node_2072", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.51 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.50723753832074, + "fos_buckling": 1.5694036365932449, + "fos_yielding": 4.155859312081519, + "deflection": 0.0014488700397398916, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.326)" + }, + "parent_node_id": "node_2071", + "improvement_over_parent": null + }, + "node_2073": { + "node_id": "node_2073", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2072", + "improvement_over_parent": null + }, + "node_2074": { + "node_id": "node_2074", + "content": "INITIAL DESIGN (Trace 299)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 174.17 kg\n Factor of Safety: 0.86\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.17056755843677, + "fos_buckling": 0.8589176348974396, + "fos_yielding": 3.536122593651803, + "deflection": 0.0018359882614643126, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2075": { + "node_id": "node_2075", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 184.94 kg\n Factor of Safety: 1.02\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.9418763040507, + "fos_buckling": 1.0219839420164274, + "fos_yielding": 3.5464314705070694, + "deflection": 0.0017872908907350874, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002621)" + }, + "parent_node_id": "node_2074", + "improvement_over_parent": null + }, + "node_2076": { + "node_id": "node_2076", + "content": "MODIFICATION: Increase 7 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 191.65 kg\n Factor of Safety: 1.38\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.65202619663813, + "fos_buckling": 1.3830240925619444, + "fos_yielding": 3.5654920394386487, + "deflection": 0.0016862393417448275, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.236)" + }, + "parent_node_id": "node_2075", + "improvement_over_parent": null + }, + "node_2077": { + "node_id": "node_2077", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23127670801813, + "fos_buckling": 1.5677951701823893, + "fos_yielding": 4.150653823541105, + "deflection": 0.0014505801248153407, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_2076", + "improvement_over_parent": null + }, + "node_2078": { + "node_id": "node_2078", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2077", + "improvement_over_parent": null + }, + "node_2079": { + "node_id": "node_2079", + "content": "INITIAL DESIGN (Trace 300)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 145.39 kg\n Factor of Safety: 0.87\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.3868308483118, + "fos_buckling": 0.8662179083538157, + "fos_yielding": 3.031261404524269, + "deflection": 0.0023527173497376423, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2080": { + "node_id": "node_2080", + "content": "MODIFICATION: Increase 5 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 154.16 kg\n Factor of Safety: 1.12\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.16278978745723, + "fos_buckling": 1.1201189383105823, + "fos_yielding": 3.0312614045242694, + "deflection": 0.00210012117281705, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.412)" + }, + "parent_node_id": "node_2079", + "improvement_over_parent": null + }, + "node_2081": { + "node_id": "node_2081", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 182.69 kg\n Factor of Safety: 1.30\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.6932178799285, + "fos_buckling": 1.296311234103479, + "fos_yielding": 3.590908370116946, + "deflection": 0.0017744424317619972, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_2080", + "improvement_over_parent": null + }, + "node_2082": { + "node_id": "node_2082", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 185.74 kg\n Factor of Safety: 1.30\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.73764385554767, + "fos_buckling": 1.304978039857613, + "fos_yielding": 3.597658178673064, + "deflection": 0.0017748835323887172, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001663)" + }, + "parent_node_id": "node_2081", + "improvement_over_parent": null + }, + "node_2083": { + "node_id": "node_2083", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 191.01 kg\n Factor of Safety: 1.38\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.0057919812471, + "fos_buckling": 1.3793000836055012, + "fos_yielding": 3.5539860965924195, + "deflection": 0.0016920578909228508, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002166)" + }, + "parent_node_id": "node_2082", + "improvement_over_parent": null + }, + "node_2084": { + "node_id": "node_2084", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.17584243079955, + "fos_buckling": 1.567678360163626, + "fos_yielding": 4.150172609591885, + "deflection": 0.001451089158233779, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.185)" + }, + "parent_node_id": "node_2083", + "improvement_over_parent": null + }, + "node_2085": { + "node_id": "node_2085", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2084", + "improvement_over_parent": null + }, + "node_2086": { + "node_id": "node_2086", + "content": "INITIAL DESIGN (Trace 301)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 109.02 kg\n Factor of Safety: 0.86\n Max Deflection: 3.09e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.02498718712306, + "fos_buckling": 0.8628591808071747, + "fos_yielding": 2.2665419429804956, + "deflection": 0.00309054283214662, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2087": { + "node_id": "node_2087", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 124.45 kg\n Factor of Safety: 0.97\n Max Deflection: 2.71e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.44780608642765, + "fos_buckling": 0.9718570995778583, + "fos_yielding": 2.586309397920055, + "deflection": 0.0027083123287613524, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.149)" + }, + "parent_node_id": "node_2086", + "improvement_over_parent": null + }, + "node_2088": { + "node_id": "node_2088", + "content": "MODIFICATION: Increase 0 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 128.38 kg\n Factor of Safety: 0.97\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.37893757494385, + "fos_buckling": 0.9722657335520365, + "fos_yielding": 2.586309397920055, + "deflection": 0.0024599582124536275, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.582)" + }, + "parent_node_id": "node_2087", + "improvement_over_parent": null + }, + "node_2089": { + "node_id": "node_2089", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 142.77 kg\n Factor of Safety: 1.07\n Max Deflection: 2.21e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.76604047299088, + "fos_buckling": 1.0682731469417217, + "fos_yielding": 2.8756641801040237, + "deflection": 0.0022135961739430544, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_2088", + "improvement_over_parent": null + }, + "node_2090": { + "node_id": "node_2090", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 148.66 kg\n Factor of Safety: 1.08\n Max Deflection: 2.21e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.6593132386824, + "fos_buckling": 1.0774740215109533, + "fos_yielding": 2.881360721723453, + "deflection": 0.0022133857028553932, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001703)" + }, + "parent_node_id": "node_2089", + "improvement_over_parent": null + }, + "node_2091": { + "node_id": "node_2091", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 193.22 kg\n Factor of Safety: 1.35\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.22109588846212, + "fos_buckling": 1.3488085725643086, + "fos_yielding": 3.7415690683919687, + "deflection": 0.0017064588678678075, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.325)" + }, + "parent_node_id": "node_2090", + "improvement_over_parent": null + }, + "node_2092": { + "node_id": "node_2092", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.14 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.1355877876485, + "fos_buckling": 1.4846921401098137, + "fos_yielding": 4.202544810367335, + "deflection": 0.0015202052118154954, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.136)" + }, + "parent_node_id": "node_2091", + "improvement_over_parent": null + }, + "node_2093": { + "node_id": "node_2093", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28940252594631, + "fos_buckling": 1.5681886252981336, + "fos_yielding": 4.151936170532135, + "deflection": 0.0014501672663311909, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2092", + "improvement_over_parent": null + }, + "node_2094": { + "node_id": "node_2094", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2093", + "improvement_over_parent": null + }, + "node_2095": { + "node_id": "node_2095", + "content": "INITIAL DESIGN (Trace 302)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 149.47 kg\n Factor of Safety: 0.05\n Max Deflection: 1.19e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.47297732730433, + "fos_buckling": 0.05397639055419607, + "fos_yielding": 1.1954155000598239, + "deflection": 0.011945254501914429, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2096": { + "node_id": "node_2096", + "content": "MODIFICATION: Increase 3 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 151.14 kg\n Factor of Safety: 0.05\n Max Deflection: 1.13e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.13880432543843, + "fos_buckling": 0.053966839961220404, + "fos_yielding": 1.2894812623923955, + "deflection": 0.011306708619356207, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.634)" + }, + "parent_node_id": "node_2095", + "improvement_over_parent": null + }, + "node_2097": { + "node_id": "node_2097", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 173.56 kg\n Factor of Safety: 0.06\n Max Deflection: 9.85e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.56202194794756, + "fos_buckling": 0.060472205098766545, + "fos_yielding": 1.4785981199341787, + "deflection": 0.009853739388424501, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_2096", + "improvement_over_parent": null + }, + "node_2098": { + "node_id": "node_2098", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 217.17 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.17307619070826, + "fos_buckling": 1.4849468911993904, + "fos_yielding": 4.203541418442137, + "deflection": 0.001520087151890525, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2097", + "improvement_over_parent": null + }, + "node_2099": { + "node_id": "node_2099", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32689092900608, + "fos_buckling": 1.5684721219588817, + "fos_yielding": 4.152893860968412, + "deflection": 0.00145003189624317, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2098", + "improvement_over_parent": null + }, + "node_2100": { + "node_id": "node_2100", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2099", + "improvement_over_parent": null + }, + "node_2101": { + "node_id": "node_2101", + "content": "INITIAL DESIGN (Trace 303)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2102": { + "node_id": "node_2102", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 169.53 kg\n Factor of Safety: 1.28\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.52561361471317, + "fos_buckling": 1.2814106168973636, + "fos_yielding": 3.571765309454058, + "deflection": 0.0019354495043444678, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002157)" + }, + "parent_node_id": "node_2101", + "improvement_over_parent": null + }, + "node_2103": { + "node_id": "node_2103", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 180.23 kg\n Factor of Safety: 1.28\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.228525444629, + "fos_buckling": 1.2807523159128673, + "fos_yielding": 3.5700053648676233, + "deflection": 0.0019353793570495985, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002603)" + }, + "parent_node_id": "node_2102", + "improvement_over_parent": null + }, + "node_2104": { + "node_id": "node_2104", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 185.48 kg\n Factor of Safety: 0.93\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.47643329439393, + "fos_buckling": 0.9282711680071741, + "fos_yielding": 3.5190750665023907, + "deflection": 0.0018277254330951232, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002157)" + }, + "parent_node_id": "node_2103", + "improvement_over_parent": null + }, + "node_2105": { + "node_id": "node_2105", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.45 kg\n Factor of Safety: 1.06\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.45355992358583, + "fos_buckling": 1.0569666965412796, + "fos_yielding": 4.122614647945949, + "deflection": 0.0015608141116705276, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.189)" + }, + "parent_node_id": "node_2104", + "improvement_over_parent": null + }, + "node_2106": { + "node_id": "node_2106", + "content": "MODIFICATION: Increase 0 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.19662719597738, + "fos_buckling": 1.5676994850908268, + "fos_yielding": 4.150346901919852, + "deflection": 0.0014509038298030305, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.517)" + }, + "parent_node_id": "node_2105", + "improvement_over_parent": null + }, + "node_2107": { + "node_id": "node_2107", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2106", + "improvement_over_parent": null + }, + "node_2108": { + "node_id": "node_2108", + "content": "INITIAL DESIGN (Trace 304)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 167.42 kg\n Factor of Safety: 1.03\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.41738925018774, + "fos_buckling": 1.025523321708977, + "fos_yielding": 2.5425179570999292, + "deflection": 0.0018717871872135584, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2109": { + "node_id": "node_2109", + "content": "MODIFICATION: Increase 3 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 168.90 kg\n Factor of Safety: 1.04\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.90274422262854, + "fos_buckling": 1.0356511758417943, + "fos_yielding": 2.543536825256474, + "deflection": 0.001864781290842014, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.618)" + }, + "parent_node_id": "node_2108", + "improvement_over_parent": null + }, + "node_2110": { + "node_id": "node_2110", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.51 kg\n Factor of Safety: 1.29\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.51253673937688, + "fos_buckling": 1.2880817055898657, + "fos_yielding": 3.25732801869694, + "deflection": 0.0014664695097202514, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.302)" + }, + "parent_node_id": "node_2109", + "improvement_over_parent": null + }, + "node_2111": { + "node_id": "node_2111", + "content": "MODIFICATION: Increase 4 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.30957415412087, + "fos_buckling": 1.5682184594292592, + "fos_yielding": 4.1533761646904965, + "deflection": 0.0014501815110787063, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.314)" + }, + "parent_node_id": "node_2110", + "improvement_over_parent": null + }, + "node_2112": { + "node_id": "node_2112", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2111", + "improvement_over_parent": null + }, + "node_2113": { + "node_id": "node_2113", + "content": "INITIAL DESIGN (Trace 305)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 201.05 kg\n Factor of Safety: 1.46\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.05200437241785, + "fos_buckling": 1.459114918170805, + "fos_yielding": 4.19673441055088, + "deflection": 0.0015437251054960094, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2114": { + "node_id": "node_2114", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 209.67 kg\n Factor of Safety: 1.10\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.6651089871785, + "fos_buckling": 1.099699726060741, + "fos_yielding": 4.143743501667936, + "deflection": 0.0014988867216569031, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2113", + "improvement_over_parent": null + }, + "node_2115": { + "node_id": "node_2115", + "content": "MODIFICATION: Increase 2 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.71 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.71283174007252, + "fos_buckling": 1.339701088536315, + "fos_yielding": 4.138228407907002, + "deflection": 0.001495830440120403, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.458)" + }, + "parent_node_id": "node_2114", + "improvement_over_parent": null + }, + "node_2116": { + "node_id": "node_2116", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26118936016877, + "fos_buckling": 1.5680058263230052, + "fos_yielding": 4.151333322405688, + "deflection": 0.0014504361698941901, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2115", + "improvement_over_parent": null + }, + "node_2117": { + "node_id": "node_2117", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2116", + "improvement_over_parent": null + }, + "node_2118": { + "node_id": "node_2118", + "content": "INITIAL DESIGN (Trace 306)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 136.00 kg\n Factor of Safety: 0.79\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.99890257334067, + "fos_buckling": 0.7940036202350552, + "fos_yielding": 2.6226480649472963, + "deflection": 0.0023660058722811176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2119": { + "node_id": "node_2119", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n\nPerformance:\n Mass: 139.27 kg\n Factor of Safety: 1.06\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.26639889569387, + "fos_buckling": 1.0604022664088153, + "fos_yielding": 2.6298299327839936, + "deflection": 0.00229067658439275, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001449)" + }, + "parent_node_id": "node_2118", + "improvement_over_parent": null + }, + "node_2120": { + "node_id": "node_2120", + "content": "MODIFICATION: Increase 2 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n\nPerformance:\n Mass: 139.96 kg\n Factor of Safety: 1.06\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.96450357441776, + "fos_buckling": 1.0619258578169637, + "fos_yielding": 2.6274470851597753, + "deflection": 0.002288076408038882, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.477)" + }, + "parent_node_id": "node_2119", + "improvement_over_parent": null + }, + "node_2121": { + "node_id": "node_2121", + "content": "MODIFICATION: Increase 8 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n\nPerformance:\n Mass: 141.71 kg\n Factor of Safety: 1.06\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.71059455547268, + "fos_buckling": 1.062538395834678, + "fos_yielding": 2.627984818978728, + "deflection": 0.002282816220983707, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.236)" + }, + "parent_node_id": "node_2120", + "improvement_over_parent": null + }, + "node_2122": { + "node_id": "node_2122", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n\nPerformance:\n Mass: 162.43 kg\n Factor of Safety: 1.20\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.43446560858354, + "fos_buckling": 1.1974081000527141, + "fos_yielding": 3.0114912153901634, + "deflection": 0.0019940244225643243, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_2121", + "improvement_over_parent": null + }, + "node_2123": { + "node_id": "node_2123", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0032)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 189.64 kg\n Factor of Safety: 1.37\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.64442793149598, + "fos_buckling": 1.3666337235783745, + "fos_yielding": 3.514726685732104, + "deflection": 0.001710679434181957, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_2122", + "improvement_over_parent": null + }, + "node_2124": { + "node_id": "node_2124", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 224.48 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 224.48199647368406, + "fos_buckling": 1.570345480259774, + "fos_yielding": 4.158548427776105, + "deflection": 0.0014481663741364602, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_2123", + "improvement_over_parent": null + }, + "node_2125": { + "node_id": "node_2125", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2124", + "improvement_over_parent": null + }, + "node_2126": { + "node_id": "node_2126", + "content": "INITIAL DESIGN (Trace 307)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 162.54 kg\n Factor of Safety: 0.03\n Max Deflection: 6.84e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.53650200556584, + "fos_buckling": 0.031128094258289104, + "fos_yielding": 0.7208452989525668, + "deflection": 6844672795648.37, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2127": { + "node_id": "node_2127", + "content": "MODIFICATION: Increase 2 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 163.11 kg\n Factor of Safety: 0.06\n Max Deflection: 7.07e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.1116170309549, + "fos_buckling": 0.06053595684970952, + "fos_yielding": 1.4416905979051335, + "deflection": 7074772586382.981, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.253)" + }, + "parent_node_id": "node_2126", + "improvement_over_parent": null + }, + "node_2128": { + "node_id": "node_2128", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 169.27 kg\n Factor of Safety: 0.05\n Max Deflection: 6.35e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.26543176925273, + "fos_buckling": 0.052893050464984874, + "fos_yielding": 1.2596714005728376, + "deflection": 0.006352746015361119, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2127", + "improvement_over_parent": null + }, + "node_2129": { + "node_id": "node_2129", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 174.44 kg\n Factor of Safety: 0.05\n Max Deflection: 6.34e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.4397746459814, + "fos_buckling": 0.05286404485851818, + "fos_yielding": 1.258980619220634, + "deflection": 0.006343360598319355, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2128", + "improvement_over_parent": null + }, + "node_2130": { + "node_id": "node_2130", + "content": "MODIFICATION: Increase 2 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 174.96 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.96396134473932, + "fos_buckling": 0.06039890639803252, + "fos_yielding": 1.4766729545752637, + "deflection": 0.006101097333069528, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.190)" + }, + "parent_node_id": "node_2129", + "improvement_over_parent": null + }, + "node_2131": { + "node_id": "node_2131", + "content": "MODIFICATION: Increase 0 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 179.66 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.66164731983176, + "fos_buckling": 0.0603688524930481, + "fos_yielding": 1.4759381765583006, + "deflection": 0.006103038125814534, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.389)" + }, + "parent_node_id": "node_2130", + "improvement_over_parent": null + }, + "node_2132": { + "node_id": "node_2132", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27270156259246, + "fos_buckling": 1.5680240680764754, + "fos_yielding": 4.151385268169949, + "deflection": 0.0014502674706291002, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2131", + "improvement_over_parent": null + }, + "node_2133": { + "node_id": "node_2133", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2132", + "improvement_over_parent": null + }, + "node_2134": { + "node_id": "node_2134", + "content": "INITIAL DESIGN (Trace 308)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 138.09 kg\n Factor of Safety: 0.64\n Max Deflection: 1.37e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.08817845800922, + "fos_buckling": 0.6449286325894287, + "fos_yielding": 1.8065717308580536, + "deflection": 13675821495527.236, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2135": { + "node_id": "node_2135", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 158.57 kg\n Factor of Safety: 0.67\n Max Deflection: 4.27e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.5747811773457, + "fos_buckling": 0.6664977348311067, + "fos_yielding": 1.0742710716527486, + "deflection": 42692949388200.445, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_2134", + "improvement_over_parent": null + }, + "node_2136": { + "node_id": "node_2136", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 171.12 kg\n Factor of Safety: 0.07\n Max Deflection: 2.15e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.12313879744195, + "fos_buckling": 0.07361215586672391, + "fos_yielding": 1.0742710716527486, + "deflection": 21544928531069.79, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2135", + "improvement_over_parent": null + }, + "node_2137": { + "node_id": "node_2137", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.73 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.73419304020265, + "fos_buckling": 1.5232620295691037, + "fos_yielding": 4.198725335188626, + "deflection": 0.0014696126321126486, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2136", + "improvement_over_parent": null + }, + "node_2138": { + "node_id": "node_2138", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3472976549633, + "fos_buckling": 1.5686613462895629, + "fos_yielding": 4.153541418159365, + "deflection": 0.001449874038560212, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2137", + "improvement_over_parent": null + }, + "node_2139": { + "node_id": "node_2139", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2138", + "improvement_over_parent": null + }, + "node_2140": { + "node_id": "node_2140", + "content": "INITIAL DESIGN (Trace 309)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2141": { + "node_id": "node_2141", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 130.05 kg\n Factor of Safety: 0.10\n Max Deflection: 6.58e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.05428494097347, + "fos_buckling": 0.09879701682077754, + "fos_yielding": 1.5837908622896213, + "deflection": 0.006584569342771577, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001837)" + }, + "parent_node_id": "node_2140", + "improvement_over_parent": null + }, + "node_2142": { + "node_id": "node_2142", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 161.38 kg\n Factor of Safety: 1.18\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.38209280460833, + "fos_buckling": 1.1771006887759714, + "fos_yielding": 3.0837441464637685, + "deflection": 0.0019941882881751895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004087)" + }, + "parent_node_id": "node_2141", + "improvement_over_parent": null + }, + "node_2143": { + "node_id": "node_2143", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n\nPerformance:\n Mass: 163.99 kg\n Factor of Safety: 1.21\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.99308237241524, + "fos_buckling": 1.211324824378027, + "fos_yielding": 3.052555383695372, + "deflection": 0.001967263473087144, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001410)" + }, + "parent_node_id": "node_2142", + "improvement_over_parent": null + }, + "node_2144": { + "node_id": "node_2144", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 195.49 kg\n Factor of Safety: 1.41\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.48882456908754, + "fos_buckling": 1.4061775861444616, + "fos_yielding": 3.636767597949213, + "deflection": 0.00165359534395599, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.208)" + }, + "parent_node_id": "node_2143", + "improvement_over_parent": null + }, + "node_2145": { + "node_id": "node_2145", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2464871958832, + "fos_buckling": 1.567948359855165, + "fos_yielding": 4.1510977444392045, + "deflection": 0.0014505269434494303, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_2144", + "improvement_over_parent": null + }, + "node_2146": { + "node_id": "node_2146", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2145", + "improvement_over_parent": null + }, + "node_2147": { + "node_id": "node_2147", + "content": "INITIAL DESIGN (Trace 310)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 142.38 kg\n Factor of Safety: 1.00\n Max Deflection: 2.26e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.38306949124055, + "fos_buckling": 1.000176260410276, + "fos_yielding": 2.727836001548575, + "deflection": 0.00226478376035673, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2148": { + "node_id": "node_2148", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 172.89 kg\n Factor of Safety: 1.17\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.88719325122355, + "fos_buckling": 1.1671431500490679, + "fos_yielding": 3.30995784130998, + "deflection": 0.0018691489437152025, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.230)" + }, + "parent_node_id": "node_2147", + "improvement_over_parent": null + }, + "node_2149": { + "node_id": "node_2149", + "content": "MODIFICATION: Increase 4 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 174.21 kg\n Factor of Safety: 1.12\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.21431314177553, + "fos_buckling": 1.116003477016436, + "fos_yielding": 3.308035596794429, + "deflection": 0.0018678336174009428, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.397)" + }, + "parent_node_id": "node_2148", + "improvement_over_parent": null + }, + "node_2150": { + "node_id": "node_2150", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 178.35 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.34904334988937, + "fos_buckling": 1.3016271549045868, + "fos_yielding": 3.318904317914592, + "deflection": 0.0018105517527959255, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001862)" + }, + "parent_node_id": "node_2149", + "improvement_over_parent": null + }, + "node_2151": { + "node_id": "node_2151", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.19 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.18640491269187, + "fos_buckling": 1.5675984201359416, + "fos_yielding": 4.149960956880591, + "deflection": 0.0014509121057051167, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_2150", + "improvement_over_parent": null + }, + "node_2152": { + "node_id": "node_2152", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2151", + "improvement_over_parent": null + }, + "node_2153": { + "node_id": "node_2153", + "content": "INITIAL DESIGN (Trace 311)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 171.07 kg\n Factor of Safety: 1.21\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.07030270311157, + "fos_buckling": 1.2083271779268174, + "fos_yielding": 3.347146012796326, + "deflection": 0.0019361889173462, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2154": { + "node_id": "node_2154", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 173.91 kg\n Factor of Safety: 1.11\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.90533908196255, + "fos_buckling": 1.1144958051733682, + "fos_yielding": 3.3021925798855567, + "deflection": 0.0018711089519819915, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001540)" + }, + "parent_node_id": "node_2153", + "improvement_over_parent": null + }, + "node_2155": { + "node_id": "node_2155", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 194.89 kg\n Factor of Safety: 1.22\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.8910035344179, + "fos_buckling": 1.2174164167837624, + "fos_yielding": 3.6991951747760194, + "deflection": 0.0016720602758189603, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.131)" + }, + "parent_node_id": "node_2154", + "improvement_over_parent": null + }, + "node_2156": { + "node_id": "node_2156", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 199.51 kg\n Factor of Safety: 1.43\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.51258461470124, + "fos_buckling": 1.4301990870381958, + "fos_yielding": 3.7114096685567497, + "deflection": 0.0016206344622963303, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002100)" + }, + "parent_node_id": "node_2155", + "improvement_over_parent": null + }, + "node_2157": { + "node_id": "node_2157", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.30 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2969960530993, + "fos_buckling": 1.568226085935872, + "fos_yielding": 4.152092072780063, + "deflection": 0.001450183812558174, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.131)" + }, + "parent_node_id": "node_2156", + "improvement_over_parent": null + }, + "node_2158": { + "node_id": "node_2158", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2157", + "improvement_over_parent": null + }, + "node_2159": { + "node_id": "node_2159", + "content": "INITIAL DESIGN (Trace 312)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 155.53 kg\n Factor of Safety: 1.16\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.5297976228443, + "fos_buckling": 1.1637888156728542, + "fos_yielding": 3.0427530378183865, + "deflection": 0.0020208038976300435, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2160": { + "node_id": "node_2160", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 177.33 kg\n Factor of Safety: 1.30\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.32579130812093, + "fos_buckling": 1.301559083278662, + "fos_yielding": 3.4683012404742444, + "deflection": 0.0017750538793973342, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_2159", + "improvement_over_parent": null + }, + "node_2161": { + "node_id": "node_2161", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.79 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.78554113869174, + "fos_buckling": 1.5240333874271854, + "fos_yielding": 4.19917586423166, + "deflection": 0.001469216669830084, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_2160", + "improvement_over_parent": null + }, + "node_2162": { + "node_id": "node_2162", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.40 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3986457534524, + "fos_buckling": 1.5688339834973577, + "fos_yielding": 4.154041940778846, + "deflection": 0.0014495157100630764, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2161", + "improvement_over_parent": null + }, + "node_2163": { + "node_id": "node_2163", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2162", + "improvement_over_parent": null + }, + "node_2164": { + "node_id": "node_2164", + "content": "INITIAL DESIGN (Trace 313)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 180.48 kg\n Factor of Safety: 0.94\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.47544735063448, + "fos_buckling": 0.9360107590067839, + "fos_yielding": 3.736110114059021, + "deflection": 0.0019033958976727562, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2165": { + "node_id": "node_2165", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 183.64 kg\n Factor of Safety: 0.99\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.64127288907525, + "fos_buckling": 0.9901921783790617, + "fos_yielding": 3.6947962796235134, + "deflection": 0.0018783439163878141, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001735)" + }, + "parent_node_id": "node_2164", + "improvement_over_parent": null + }, + "node_2166": { + "node_id": "node_2166", + "content": "MODIFICATION: Increase 10 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n\nPerformance:\n Mass: 185.09 kg\n Factor of Safety: 1.00\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.09454313768077, + "fos_buckling": 0.9950143016555165, + "fos_yielding": 3.690945548587575, + "deflection": 0.0018763717390012128, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.522)" + }, + "parent_node_id": "node_2165", + "improvement_over_parent": null + }, + "node_2167": { + "node_id": "node_2167", + "content": "MODIFICATION: Increase 0 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n\nPerformance:\n Mass: 187.86 kg\n Factor of Safety: 0.98\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.85716601309335, + "fos_buckling": 0.9761744377401466, + "fos_yielding": 3.703123330033781, + "deflection": 0.0018209310793881961, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.227)" + }, + "parent_node_id": "node_2166", + "improvement_over_parent": null + }, + "node_2168": { + "node_id": "node_2168", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0030)]\n\nPerformance:\n Mass: 211.02 kg\n Factor of Safety: 1.07\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.0171157118195, + "fos_buckling": 1.0749230039033597, + "fos_yielding": 4.156169795359052, + "deflection": 0.0016219859757796121, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_2167", + "improvement_over_parent": null + }, + "node_2169": { + "node_id": "node_2169", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2168", + "improvement_over_parent": null + }, + "node_2170": { + "node_id": "node_2170", + "content": "INITIAL DESIGN (Trace 314)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 123.93 kg\n Factor of Safety: 0.04\n Max Deflection: 8.82e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.93041108156108, + "fos_buckling": 0.044153048482457546, + "fos_yielding": 1.0223273382860472, + "deflection": 0.00881916321561635, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2171": { + "node_id": "node_2171", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n\nPerformance:\n Mass: 154.01 kg\n Factor of Safety: 1.15\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.01008044068794, + "fos_buckling": 1.14706394520251, + "fos_yielding": 2.8673117954444445, + "deflection": 0.002093467884554052, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003865)" + }, + "parent_node_id": "node_2170", + "improvement_over_parent": null + }, + "node_2172": { + "node_id": "node_2172", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 173.41 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.4065737627682, + "fos_buckling": 1.2708427036345817, + "fos_yielding": 3.2273102240436646, + "deflection": 0.0018615811430599462, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_2171", + "improvement_over_parent": null + }, + "node_2173": { + "node_id": "node_2173", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.32621641021507, + "fos_buckling": 1.5684164387604214, + "fos_yielding": 4.152670379498103, + "deflection": 0.001450020704322958, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.316)" + }, + "parent_node_id": "node_2172", + "improvement_over_parent": null + }, + "node_2174": { + "node_id": "node_2174", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2173", + "improvement_over_parent": null + }, + "node_2175": { + "node_id": "node_2175", + "content": "INITIAL DESIGN (Trace 315)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 88.81 kg\n Factor of Safety: 0.03\n Max Deflection: 1.92e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 88.81434601496002, + "fos_buckling": 0.03385973827115186, + "fos_yielding": 0.7608733723441345, + "deflection": 0.019198371742639157, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2176": { + "node_id": "node_2176", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n\nPerformance:\n Mass: 91.96 kg\n Factor of Safety: 0.03\n Max Deflection: 1.19e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 91.96390613765583, + "fos_buckling": 0.033837004988322004, + "fos_yielding": 0.7603625252302945, + "deflection": 0.011863350407576094, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001255)" + }, + "parent_node_id": "node_2175", + "improvement_over_parent": null + }, + "node_2177": { + "node_id": "node_2177", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0030)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n\nPerformance:\n Mass: 114.28 kg\n Factor of Safety: 0.88\n Max Deflection: 2.81e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.28421066572335, + "fos_buckling": 0.8792154950764169, + "fos_yielding": 2.1292367041782505, + "deflection": 0.0028140908442754885, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.002823)" + }, + "parent_node_id": "node_2176", + "improvement_over_parent": null + }, + "node_2178": { + "node_id": "node_2178", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n\nPerformance:\n Mass: 133.18 kg\n Factor of Safety: 1.01\n Max Deflection: 2.42e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 133.17754728988382, + "fos_buckling": 1.0090146371186148, + "fos_yielding": 2.4804008832916074, + "deflection": 0.002417758473265691, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.174)" + }, + "parent_node_id": "node_2177", + "improvement_over_parent": null + }, + "node_2179": { + "node_id": "node_2179", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n\nPerformance:\n Mass: 151.25 kg\n Factor of Safety: 1.13\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.25238246731993, + "fos_buckling": 1.1290992728188511, + "fos_yielding": 2.816129674480446, + "deflection": 0.0021312686212181463, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_2178", + "improvement_over_parent": null + }, + "node_2180": { + "node_id": "node_2180", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 172.57 kg\n Factor of Safety: 1.27\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.56889288427377, + "fos_buckling": 1.2655979189825732, + "fos_yielding": 3.2117916490014005, + "deflection": 0.0018705215044402305, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_2179", + "improvement_over_parent": null + }, + "node_2181": { + "node_id": "node_2181", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n\nPerformance:\n Mass: 193.93 kg\n Factor of Safety: 1.40\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.9295173225337, + "fos_buckling": 1.396838211403513, + "fos_yielding": 3.60796995063353, + "deflection": 0.0016667348845801659, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_2180", + "improvement_over_parent": null + }, + "node_2182": { + "node_id": "node_2182", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.40705664328658, + "fos_buckling": 1.5688810027491902, + "fos_yielding": 4.154197099287157, + "deflection": 0.0014495054913731885, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_2181", + "improvement_over_parent": null + }, + "node_2183": { + "node_id": "node_2183", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2182", + "improvement_over_parent": null + }, + "node_2184": { + "node_id": "node_2184", + "content": "INITIAL DESIGN (Trace 316)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 131.70 kg\n Factor of Safety: 0.67\n Max Deflection: 2.36e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.69597235948822, + "fos_buckling": 0.6700185523977693, + "fos_yielding": 1.8210880464035524, + "deflection": 0.0023649869138016744, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2185": { + "node_id": "node_2185", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 168.24 kg\n Factor of Safety: 0.85\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.24414996582465, + "fos_buckling": 0.8475242437569248, + "fos_yielding": 2.343659570350808, + "deflection": 0.0018376599797642079, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.299)" + }, + "parent_node_id": "node_2184", + "improvement_over_parent": null + }, + "node_2186": { + "node_id": "node_2186", + "content": "MODIFICATION: Increase 6 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 175.92 kg\n Factor of Safety: 1.22\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.91736810478915, + "fos_buckling": 1.2162622226451096, + "fos_yielding": 3.051041959238973, + "deflection": 0.0016850376217350817, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.567)" + }, + "parent_node_id": "node_2185", + "improvement_over_parent": null + }, + "node_2187": { + "node_id": "node_2187", + "content": "MODIFICATION: Increase 4 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 181.70 kg\n Factor of Safety: 1.24\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.70178084989533, + "fos_buckling": 1.2439093096649665, + "fos_yielding": 3.588798640158075, + "deflection": 0.001669942417602316, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.245)" + }, + "parent_node_id": "node_2186", + "improvement_over_parent": null + }, + "node_2188": { + "node_id": "node_2188", + "content": "MODIFICATION: Increase 8 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 183.78 kg\n Factor of Safety: 1.24\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.7802190917572, + "fos_buckling": 1.235036058502044, + "fos_yielding": 3.588798640158075, + "deflection": 0.0016651232351415246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.399)" + }, + "parent_node_id": "node_2187", + "improvement_over_parent": null + }, + "node_2189": { + "node_id": "node_2189", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.91 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.90742071197235, + "fos_buckling": 1.3405949259971521, + "fos_yielding": 4.008037226110152, + "deflection": 0.0014960753628981123, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_2188", + "improvement_over_parent": null + }, + "node_2190": { + "node_id": "node_2190", + "content": "MODIFICATION: Increase 6 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.66 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.66069576071146, + "fos_buckling": 1.3405949259971521, + "fos_yielding": 4.135094595371578, + "deflection": 0.0014960753628981123, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.256)" + }, + "parent_node_id": "node_2189", + "improvement_over_parent": null + }, + "node_2191": { + "node_id": "node_2191", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20905338080772, + "fos_buckling": 1.5678470112212357, + "fos_yielding": 4.148191249576374, + "deflection": 0.001450670030483682, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2190", + "improvement_over_parent": null + }, + "node_2192": { + "node_id": "node_2192", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2191", + "improvement_over_parent": null + }, + "node_2193": { + "node_id": "node_2193", + "content": "INITIAL DESIGN (Trace 317)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 175.37 kg\n Factor of Safety: 1.16\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.3675330036752, + "fos_buckling": 1.158939324550181, + "fos_yielding": 3.3217835971274123, + "deflection": 0.0017695835326780502, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2194": { + "node_id": "node_2194", + "content": "MODIFICATION: Increase 6 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 179.98 kg\n Factor of Safety: 1.32\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.98412830311506, + "fos_buckling": 1.3178086215914224, + "fos_yielding": 3.5197645988068227, + "deflection": 0.0017492830010632989, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.238)" + }, + "parent_node_id": "node_2193", + "improvement_over_parent": null + }, + "node_2195": { + "node_id": "node_2195", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.72 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.72479437771628, + "fos_buckling": 1.5235422316405096, + "fos_yielding": 4.1974951507295595, + "deflection": 0.0014697327677593106, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.212)" + }, + "parent_node_id": "node_2194", + "improvement_over_parent": null + }, + "node_2196": { + "node_id": "node_2196", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33789899247694, + "fos_buckling": 1.5684704297038758, + "fos_yielding": 4.152389998801816, + "deflection": 0.0014500293116551661, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2195", + "improvement_over_parent": null + }, + "node_2197": { + "node_id": "node_2197", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2196", + "improvement_over_parent": null + }, + "node_2198": { + "node_id": "node_2198", + "content": "INITIAL DESIGN (Trace 318)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2199": { + "node_id": "node_2199", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 135.71 kg\n Factor of Safety: 0.77\n Max Deflection: 2.31e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.707901366278, + "fos_buckling": 0.7666704046668157, + "fos_yielding": 2.105726982046404, + "deflection": 0.0023110498246254755, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001322)" + }, + "parent_node_id": "node_2198", + "improvement_over_parent": null + }, + "node_2200": { + "node_id": "node_2200", + "content": "MODIFICATION: Increase 5 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 142.52 kg\n Factor of Safety: 1.05\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.52246019094534, + "fos_buckling": 1.0453571777895576, + "fos_yielding": 2.903872988863955, + "deflection": 0.002249854811225233, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.548)" + }, + "parent_node_id": "node_2199", + "improvement_over_parent": null + }, + "node_2201": { + "node_id": "node_2201", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 175.86 kg\n Factor of Safety: 1.29\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.8632319143053, + "fos_buckling": 1.288651262153254, + "fos_yielding": 3.5799332093045018, + "deflection": 0.0018264327083682172, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.252)" + }, + "parent_node_id": "node_2200", + "improvement_over_parent": null + }, + "node_2202": { + "node_id": "node_2202", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0054)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 206.38 kg\n Factor of Safety: 1.47\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.38481679294756, + "fos_buckling": 1.4742702100589582, + "fos_yielding": 4.197631028427652, + "deflection": 0.0015587271651595833, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.190)" + }, + "parent_node_id": "node_2201", + "improvement_over_parent": null + }, + "node_2203": { + "node_id": "node_2203", + "content": "MODIFICATION: Increase 6 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0054)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0095)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 230.03 kg\n Factor of Safety: 1.47\n Max Deflection: 1.39e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 230.03474603479827, + "fos_buckling": 1.4668384110425872, + "fos_yielding": 4.197631028427652, + "deflection": 0.0013942863471479582, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.637)" + }, + "parent_node_id": "node_2202", + "improvement_over_parent": null + }, + "node_2204": { + "node_id": "node_2204", + "content": "MODIFICATION: Increase 1 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0054)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0095)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 234.79 kg\n Factor of Safety: 1.52\n Max Deflection: 1.31e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 234.78953939697982, + "fos_buckling": 1.5221391795748227, + "fos_yielding": 4.197631028427652, + "deflection": 0.001312926481292803, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.408)" + }, + "parent_node_id": "node_2203", + "improvement_over_parent": null + }, + "node_2205": { + "node_id": "node_2205", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0054)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0095)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 243.40 kg\n Factor of Safety: 1.52\n Max Deflection: 1.31e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 243.40264401174048, + "fos_buckling": 1.5218801819876855, + "fos_yielding": 4.194381533536939, + "deflection": 0.0013133880546794176, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2204", + "improvement_over_parent": null + }, + "node_2206": { + "node_id": "node_2206", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2205", + "improvement_over_parent": null + }, + "node_2207": { + "node_id": "node_2207", + "content": "INITIAL DESIGN (Trace 319)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 145.89 kg\n Factor of Safety: 1.02\n Max Deflection: 2.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.88871204238242, + "fos_buckling": 1.0230036031488277, + "fos_yielding": 2.9269088202593494, + "deflection": 0.002234038677395561, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2208": { + "node_id": "node_2208", + "content": "MODIFICATION: Increase 1 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 148.84 kg\n Factor of Safety: 1.02\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.8420562343873, + "fos_buckling": 1.019748943070371, + "fos_yielding": 2.9267873942107077, + "deflection": 0.0021086966910937727, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.333)" + }, + "parent_node_id": "node_2207", + "improvement_over_parent": null + }, + "node_2209": { + "node_id": "node_2209", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 171.94 kg\n Factor of Safety: 1.15\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.93760625232068, + "fos_buckling": 1.1457389134763185, + "fos_yielding": 3.3794430749855118, + "deflection": 0.0018283690499382424, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_2208", + "improvement_over_parent": null + }, + "node_2210": { + "node_id": "node_2210", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 182.17 kg\n Factor of Safety: 1.33\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.17490625476017, + "fos_buckling": 1.325395359474277, + "fos_yielding": 3.3901346312098735, + "deflection": 0.0017730107270153648, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002481)" + }, + "parent_node_id": "node_2209", + "improvement_over_parent": null + }, + "node_2211": { + "node_id": "node_2211", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31866426762875, + "fos_buckling": 1.5684858790502303, + "fos_yielding": 4.152729781334447, + "deflection": 0.0014501085086299787, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_2210", + "improvement_over_parent": null + }, + "node_2212": { + "node_id": "node_2212", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2211", + "improvement_over_parent": null + }, + "node_2213": { + "node_id": "node_2213", + "content": "INITIAL DESIGN (Trace 320)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 157.46 kg\n Factor of Safety: 0.95\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.4561649704894, + "fos_buckling": 0.9505718786836176, + "fos_yielding": 2.3134161714326136, + "deflection": 0.0019924833812728646, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2214": { + "node_id": "node_2214", + "content": "MODIFICATION: Increase 4 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 164.59 kg\n Factor of Safety: 0.95\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.58987082482722, + "fos_buckling": 0.9505718786836178, + "fos_yielding": 2.3134161714326136, + "deflection": 0.0019924833812728624, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.427)" + }, + "parent_node_id": "node_2213", + "improvement_over_parent": null + }, + "node_2215": { + "node_id": "node_2215", + "content": "MODIFICATION: Increase 2 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 165.25 kg\n Factor of Safety: 0.95\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.24699669049062, + "fos_buckling": 0.9505322856947093, + "fos_yielding": 2.3133198135843855, + "deflection": 0.0019828384421457074, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.311)" + }, + "parent_node_id": "node_2214", + "improvement_over_parent": null + }, + "node_2216": { + "node_id": "node_2216", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 200.46 kg\n Factor of Safety: 1.13\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.45569762818943, + "fos_buckling": 1.1347290588490027, + "fos_yielding": 2.818707692164921, + "deflection": 0.0016454803382090506, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_2215", + "improvement_over_parent": null + }, + "node_2217": { + "node_id": "node_2217", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 205.63 kg\n Factor of Safety: 1.15\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.6300405049181, + "fos_buckling": 1.1511701218510868, + "fos_yielding": 2.8595478825081106, + "deflection": 0.0015206654947604314, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2216", + "improvement_over_parent": null + }, + "node_2218": { + "node_id": "node_2218", + "content": "MODIFICATION: Increase 4 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0087)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 219.50 kg\n Factor of Safety: 1.14\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.49612762783897, + "fos_buckling": 1.135686211167526, + "fos_yielding": 2.874104761323332, + "deflection": 0.001520382536846389, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.529)" + }, + "parent_node_id": "node_2217", + "improvement_over_parent": null + }, + "node_2219": { + "node_id": "node_2219", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0087)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 225.65 kg\n Factor of Safety: 1.12\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 225.6499423661368, + "fos_buckling": 1.1210209092489272, + "fos_yielding": 2.842649908741223, + "deflection": 0.0015150825943713233, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2218", + "improvement_over_parent": null + }, + "node_2220": { + "node_id": "node_2220", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2219", + "improvement_over_parent": null + }, + "node_2221": { + "node_id": "node_2221", + "content": "INITIAL DESIGN (Trace 321)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 185.53 kg\n Factor of Safety: 1.35\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.52884929286554, + "fos_buckling": 1.3480895442007725, + "fos_yielding": 3.766979672972891, + "deflection": 0.0016923954926503823, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2222": { + "node_id": "node_2222", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n\nPerformance:\n Mass: 189.28 kg\n Factor of Safety: 1.25\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.28328218890442, + "fos_buckling": 1.247675515583558, + "fos_yielding": 3.766979672972891, + "deflection": 0.0016456120516793623, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001509)" + }, + "parent_node_id": "node_2221", + "improvement_over_parent": null + }, + "node_2223": { + "node_id": "node_2223", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 211.01 kg\n Factor of Safety: 1.37\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.01403998150107, + "fos_buckling": 1.3671037674485746, + "fos_yielding": 4.19782856484861, + "deflection": 0.0014783761640436248, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_2222", + "improvement_over_parent": null + }, + "node_2224": { + "node_id": "node_2224", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.63 kg\n Factor of Safety: 1.53\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.62714459626173, + "fos_buckling": 1.5250803156899029, + "fos_yielding": 4.15727166588189, + "deflection": 0.0014618755073082979, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2223", + "improvement_over_parent": null + }, + "node_2225": { + "node_id": "node_2225", + "content": "MODIFICATION: Increase 3 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 221.38 kg\n Factor of Safety: 1.45\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.37790231057934, + "fos_buckling": 1.4480183346507678, + "fos_yielding": 4.158920217563441, + "deflection": 0.0014582711698053912, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.560)" + }, + "parent_node_id": "node_2224", + "improvement_over_parent": null + }, + "node_2226": { + "node_id": "node_2226", + "content": "MODIFICATION: Increase 5 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0086)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 234.80 kg\n Factor of Safety: 1.12\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 234.79757074792602, + "fos_buckling": 1.121949647337142, + "fos_yielding": 4.1669250560090925, + "deflection": 0.0014398472158699842, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.511)" + }, + "parent_node_id": "node_2225", + "improvement_over_parent": null + }, + "node_2227": { + "node_id": "node_2227", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2226", + "improvement_over_parent": null + }, + "node_2228": { + "node_id": "node_2228", + "content": "INITIAL DESIGN (Trace 322)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 185.73 kg\n Factor of Safety: 1.24\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.7258033315813, + "fos_buckling": 1.2353374283396767, + "fos_yielding": 3.562634587782855, + "deflection": 0.00174946856323132, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2229": { + "node_id": "node_2229", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.41 kg\n Factor of Safety: 1.41\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.4099349767272, + "fos_buckling": 1.4083538893441483, + "fos_yielding": 4.147532909934622, + "deflection": 0.0015040865821729396, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_2228", + "improvement_over_parent": null + }, + "node_2230": { + "node_id": "node_2230", + "content": "MODIFICATION: Increase 3 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.50e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 218.17000859252494, + "fos_buckling": 1.5675862725589267, + "fos_yielding": 4.148719347252543, + "deflection": 0.0014995176954074817, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.565)" + }, + "parent_node_id": "node_2229", + "improvement_over_parent": null + }, + "node_2231": { + "node_id": "node_2231", + "content": "MODIFICATION: Increase 8 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.40 kg\n Factor of Safety: 1.38\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.39820166712542, + "fos_buckling": 1.3768514017171827, + "fos_yielding": 4.140892962757212, + "deflection": 0.0014959154396239117, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.383)" + }, + "parent_node_id": "node_2230", + "improvement_over_parent": null + }, + "node_2232": { + "node_id": "node_2232", + "content": "MODIFICATION: Increase 0 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3252862281916, + "fos_buckling": 1.56837346383568, + "fos_yielding": 4.152531856261722, + "deflection": 0.001449952484382751, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.214)" + }, + "parent_node_id": "node_2231", + "improvement_over_parent": null + }, + "node_2233": { + "node_id": "node_2233", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2232", + "improvement_over_parent": null + }, + "node_2234": { + "node_id": "node_2234", + "content": "INITIAL DESIGN (Trace 323)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 126.88 kg\n Factor of Safety: 0.99\n Max Deflection: 2.59e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.88144388049699, + "fos_buckling": 0.9879635767704795, + "fos_yielding": 2.633960688769283, + "deflection": 0.002591438837421037, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2235": { + "node_id": "node_2235", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 157.25 kg\n Factor of Safety: 1.19\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.2458602613226, + "fos_buckling": 1.1920586832082838, + "fos_yielding": 3.2620988377381783, + "deflection": 0.0020926170483552063, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.256)" + }, + "parent_node_id": "node_2234", + "improvement_over_parent": null + }, + "node_2236": { + "node_id": "node_2236", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 202.34 kg\n Factor of Safety: 1.47\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.33514696275614, + "fos_buckling": 1.4722667054331848, + "fos_yielding": 4.1931324878592795, + "deflection": 0.001628020428835778, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.314)" + }, + "parent_node_id": "node_2235", + "improvement_over_parent": null + }, + "node_2237": { + "node_id": "node_2237", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 208.49 kg\n Factor of Safety: 1.28\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.48896170105397, + "fos_buckling": 1.2821208421529475, + "fos_yielding": 4.1931324878592795, + "deflection": 0.0015506083463120192, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2236", + "improvement_over_parent": null + }, + "node_2238": { + "node_id": "node_2238", + "content": "MODIFICATION: Increase 2 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 209.67 kg\n Factor of Safety: 1.28\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.67230436384241, + "fos_buckling": 1.281809767598569, + "fos_yielding": 4.19281722802183, + "deflection": 0.0015507918002114689, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.548)" + }, + "parent_node_id": "node_2237", + "improvement_over_parent": null + }, + "node_2239": { + "node_id": "node_2239", + "content": "MODIFICATION: Increase 1 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 214.46 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.45607555494203, + "fos_buckling": 1.5221742077105773, + "fos_yielding": 4.19281722802183, + "deflection": 0.0014715145396111734, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.412)" + }, + "parent_node_id": "node_2238", + "improvement_over_parent": null + }, + "node_2240": { + "node_id": "node_2240", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 219.91 kg\n Factor of Safety: 1.56\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.91394958198845, + "fos_buckling": 1.5638249766217296, + "fos_yielding": 4.15732358972963, + "deflection": 0.001455689645669846, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001570)" + }, + "parent_node_id": "node_2239", + "improvement_over_parent": null + }, + "node_2241": { + "node_id": "node_2241", + "content": "MODIFICATION: Increase 8 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0093)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 242.92 kg\n Factor of Safety: 1.57\n Max Deflection: 1.32e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 242.92163290556078, + "fos_buckling": 1.5679542626050813, + "fos_yielding": 4.15113907009646, + "deflection": 0.001318994473663642, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.634)" + }, + "parent_node_id": "node_2240", + "improvement_over_parent": null + }, + "node_2242": { + "node_id": "node_2242", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2241", + "improvement_over_parent": null + }, + "node_2243": { + "node_id": "node_2243", + "content": "INITIAL DESIGN (Trace 324)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 169.09 kg\n Factor of Safety: 1.10\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.08653166359716, + "fos_buckling": 1.1005718950718915, + "fos_yielding": 2.723942042343154, + "deflection": 0.0018850648773256194, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2244": { + "node_id": "node_2244", + "content": "MODIFICATION: Increase 5 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 170.02 kg\n Factor of Safety: 1.10\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.01615532936881, + "fos_buckling": 1.0999001769408083, + "fos_yielding": 2.722279523732553, + "deflection": 0.0018803105851862084, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.245)" + }, + "parent_node_id": "node_2243", + "improvement_over_parent": null + }, + "node_2245": { + "node_id": "node_2245", + "content": "MODIFICATION: Increase 2 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 171.04 kg\n Factor of Safety: 1.10\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.04416373011665, + "fos_buckling": 1.0988455506076202, + "fos_yielding": 2.7196692980664277, + "deflection": 0.0018779951406014172, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.592)" + }, + "parent_node_id": "node_2244", + "improvement_over_parent": null + }, + "node_2246": { + "node_id": "node_2246", + "content": "MODIFICATION: Increase 4 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 176.70 kg\n Factor of Safety: 1.07\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.69875015194117, + "fos_buckling": 1.065653777299059, + "fos_yielding": 3.3677655865437917, + "deflection": 0.0018585839630691295, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.266)" + }, + "parent_node_id": "node_2245", + "improvement_over_parent": null + }, + "node_2247": { + "node_id": "node_2247", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.04 kg\n Factor of Safety: 1.26\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.04067459747228, + "fos_buckling": 1.2560120920053874, + "fos_yielding": 4.1318658026127055, + "deflection": 0.0015163327935222126, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.250)" + }, + "parent_node_id": "node_2246", + "improvement_over_parent": null + }, + "node_2248": { + "node_id": "node_2248", + "content": "MODIFICATION: Increase 7 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21199582627315, + "fos_buckling": 1.5676722503968603, + "fos_yielding": 4.148705971438436, + "deflection": 0.001450587618140218, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.181)" + }, + "parent_node_id": "node_2247", + "improvement_over_parent": null + }, + "node_2249": { + "node_id": "node_2249", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2248", + "improvement_over_parent": null + }, + "node_2250": { + "node_id": "node_2250", + "content": "INITIAL DESIGN (Trace 325)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 124.29 kg\n Factor of Safety: 0.15\n Max Deflection: 9.93e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.28608267245848, + "fos_buckling": 0.15288152301364485, + "fos_yielding": 1.9921908068952219, + "deflection": 9934115998802.36, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2251": { + "node_id": "node_2251", + "content": "MODIFICATION: Increase 5 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 131.36 kg\n Factor of Safety: 0.15\n Max Deflection: 9.93e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.35779347863104, + "fos_buckling": 0.15288152301364485, + "fos_yielding": 2.2051068920960297, + "deflection": 9934115998802.357, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.449)" + }, + "parent_node_id": "node_2250", + "improvement_over_parent": null + }, + "node_2252": { + "node_id": "node_2252", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 166.89 kg\n Factor of Safety: 0.15\n Max Deflection: 1.09e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.89493097314468, + "fos_buckling": 0.14722506947188052, + "fos_yielding": 2.2051068920960297, + "deflection": 10869175597448.863, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.297)" + }, + "parent_node_id": "node_2251", + "improvement_over_parent": null + }, + "node_2253": { + "node_id": "node_2253", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 175.51 kg\n Factor of Safety: 0.07\n Max Deflection: 1.36e+13 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.50803558790534, + "fos_buckling": 0.07361253473594026, + "fos_yielding": 1.1025534460480149, + "deflection": 13612200505015.73, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2252", + "improvement_over_parent": null + }, + "node_2254": { + "node_id": "node_2254", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 206.70 kg\n Factor of Safety: 1.12\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.6994027300038, + "fos_buckling": 1.118148617134833, + "fos_yielding": 4.139930514741528, + "deflection": 0.001673671079537459, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004068)" + }, + "parent_node_id": "node_2253", + "improvement_over_parent": null + }, + "node_2255": { + "node_id": "node_2255", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 211.87 kg\n Factor of Safety: 1.17\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.87374560673248, + "fos_buckling": 1.1740715096798156, + "fos_yielding": 4.160823645187821, + "deflection": 0.0015839695851392647, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2254", + "improvement_over_parent": null + }, + "node_2256": { + "node_id": "node_2256", + "content": "MODIFICATION: Increase 10 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0033)]\n\nPerformance:\n Mass: 213.69 kg\n Factor of Safety: 1.26\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.69301997465695, + "fos_buckling": 1.2625066649390475, + "fos_yielding": 4.16204588607266, + "deflection": 0.0015788924711601959, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.403)" + }, + "parent_node_id": "node_2255", + "improvement_over_parent": null + }, + "node_2257": { + "node_id": "node_2257", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2256", + "improvement_over_parent": null + }, + "node_2258": { + "node_id": "node_2258", + "content": "INITIAL DESIGN (Trace 326)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2259": { + "node_id": "node_2259", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 168.06 kg\n Factor of Safety: 0.01\n Max Deflection: 1.04e+14 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.06002479818238, + "fos_buckling": 0.01474985050380952, + "fos_yielding": 0.2744539092851078, + "deflection": 103580663962479.28, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2258", + "improvement_over_parent": null + }, + "node_2260": { + "node_id": "node_2260", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.71 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.71199314955578, + "fos_buckling": 1.339237367689591, + "fos_yielding": 4.138239481074689, + "deflection": 0.0014958161507800359, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_2259", + "improvement_over_parent": null + }, + "node_2261": { + "node_id": "node_2261", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26035076965204, + "fos_buckling": 1.5680842806615805, + "fos_yielding": 4.151341494353928, + "deflection": 0.001450423544149228, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2260", + "improvement_over_parent": null + }, + "node_2262": { + "node_id": "node_2262", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2261", + "improvement_over_parent": null + }, + "node_2263": { + "node_id": "node_2263", + "content": "INITIAL DESIGN (Trace 327)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 106.00 kg\n Factor of Safety: 0.04\n Max Deflection: 4.16e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.00055800278959, + "fos_buckling": 0.04068302398709843, + "fos_yielding": 0.5512767230240074, + "deflection": 41622349778145.586, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2264": { + "node_id": "node_2264", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 114.25 kg\n Factor of Safety: 0.08\n Max Deflection: 5.92e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.24913530090772, + "fos_buckling": 0.08136604797419686, + "fos_yielding": 1.1025534460480149, + "deflection": 5915379909381.297, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001970)" + }, + "parent_node_id": "node_2263", + "improvement_over_parent": null + }, + "node_2265": { + "node_id": "node_2265", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 134.73 kg\n Factor of Safety: 0.07\n Max Deflection: 1.13e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.73407876953232, + "fos_buckling": 0.0669804786029519, + "fos_yielding": 1.08126794842885, + "deflection": 11300616327999.652, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_2264", + "improvement_over_parent": null + }, + "node_2266": { + "node_id": "node_2266", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 173.92 kg\n Factor of Safety: 0.08\n Max Deflection: 1.04e+13 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.92419810174127, + "fos_buckling": 0.07837133670942006, + "fos_yielding": 1.1025534460480146, + "deflection": 10433809993170.902, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_2265", + "improvement_over_parent": null + }, + "node_2267": { + "node_id": "node_2267", + "content": "MODIFICATION: Increase 4 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 176.12 kg\n Factor of Safety: 0.29\n Max Deflection: 3.40e+12 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.1224546318036, + "fos_buckling": 0.2945139543990732, + "fos_yielding": 3.4455668361996796, + "deflection": 3403159154813.3564, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.610)" + }, + "parent_node_id": "node_2266", + "improvement_over_parent": null + }, + "node_2268": { + "node_id": "node_2268", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 179.68 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.67686196750162, + "fos_buckling": 0.060365821836410316, + "fos_yielding": 1.475868723910045, + "deflection": 0.006103023224051345, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2267", + "improvement_over_parent": null + }, + "node_2269": { + "node_id": "node_2269", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28791621026232, + "fos_buckling": 1.5682115551647597, + "fos_yielding": 4.152056548919831, + "deflection": 0.0014502561951509724, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2268", + "improvement_over_parent": null + }, + "node_2270": { + "node_id": "node_2270", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2269", + "improvement_over_parent": null + }, + "node_2271": { + "node_id": "node_2271", + "content": "INITIAL DESIGN (Trace 328)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 168.47 kg\n Factor of Safety: 1.21\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.46565142876364, + "fos_buckling": 1.2111036396631012, + "fos_yielding": 3.3137634889957552, + "deflection": 0.001983980315406015, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2272": { + "node_id": "node_2272", + "content": "MODIFICATION: Increase 3 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 169.25 kg\n Factor of Safety: 1.21\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.24992627969806, + "fos_buckling": 1.2113454665089016, + "fos_yielding": 3.3140424886324475, + "deflection": 0.001984157179072103, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.255)" + }, + "parent_node_id": "node_2271", + "improvement_over_parent": null + }, + "node_2273": { + "node_id": "node_2273", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 174.11 kg\n Factor of Safety: 1.17\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.10609566011283, + "fos_buckling": 1.1723258194860042, + "fos_yielding": 3.271053630389954, + "deflection": 0.0018844782059702677, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001984)" + }, + "parent_node_id": "node_2272", + "improvement_over_parent": null + }, + "node_2274": { + "node_id": "node_2274", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 220.78 kg\n Factor of Safety: 1.41\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.7834036956749, + "fos_buckling": 1.4137918767875999, + "fos_yielding": 4.143771771832687, + "deflection": 0.0014898537032513573, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.294)" + }, + "parent_node_id": "node_2273", + "improvement_over_parent": null + }, + "node_2275": { + "node_id": "node_2275", + "content": "MODIFICATION: Increase 0 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4071785992267, + "fos_buckling": 1.5688238420341998, + "fos_yielding": 4.154013949101162, + "deflection": 0.0014494509058603476, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.188)" + }, + "parent_node_id": "node_2274", + "improvement_over_parent": null + }, + "node_2276": { + "node_id": "node_2276", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2275", + "improvement_over_parent": null + }, + "node_2277": { + "node_id": "node_2277", + "content": "INITIAL DESIGN (Trace 329)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.43 kg\n Factor of Safety: 1.12\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.42791179869775, + "fos_buckling": 1.1232161374571565, + "fos_yielding": 4.127655060438894, + "deflection": 0.0015896086675030912, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2278": { + "node_id": "node_2278", + "content": "MODIFICATION: Increase 3 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 215.38 kg\n Factor of Safety: 1.13\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.378093817431, + "fos_buckling": 1.1348543862303664, + "fos_yielding": 4.128326387441056, + "deflection": 0.001587234292624725, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.247)" + }, + "parent_node_id": "node_2277", + "improvement_over_parent": null + }, + "node_2279": { + "node_id": "node_2279", + "content": "MODIFICATION: Increase 1 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.91 kg\n Factor of Safety: 1.10\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.90687687605734, + "fos_buckling": 1.100089873560636, + "fos_yielding": 4.1262795985631735, + "deflection": 0.0015497002627702149, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.185)" + }, + "parent_node_id": "node_2278", + "improvement_over_parent": null + }, + "node_2280": { + "node_id": "node_2280", + "content": "MODIFICATION: Increase 0 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25465348447324, + "fos_buckling": 1.568015182869636, + "fos_yielding": 4.151333584141965, + "deflection": 0.0014504936699262826, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.466)" + }, + "parent_node_id": "node_2279", + "improvement_over_parent": null + }, + "node_2281": { + "node_id": "node_2281", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2280", + "improvement_over_parent": null + }, + "node_2282": { + "node_id": "node_2282", + "content": "INITIAL DESIGN (Trace 330)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 136.37 kg\n Factor of Safety: 0.95\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.3654359493652, + "fos_buckling": 0.9469412500650818, + "fos_yielding": 2.6460113412094244, + "deflection": 0.0023503003473650083, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2283": { + "node_id": "node_2283", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 164.54 kg\n Factor of Safety: 1.11\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.54055983454202, + "fos_buckling": 1.1102901009870114, + "fos_yielding": 3.190589991571311, + "deflection": 0.0019519481357873159, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.221)" + }, + "parent_node_id": "node_2282", + "improvement_over_parent": null + }, + "node_2284": { + "node_id": "node_2284", + "content": "MODIFICATION: Increase 7 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 166.81 kg\n Factor of Safety: 0.92\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.80784608748942, + "fos_buckling": 0.9169731443749586, + "fos_yielding": 3.18331930069643, + "deflection": 0.0019453449925920085, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.558)" + }, + "parent_node_id": "node_2283", + "improvement_over_parent": null + }, + "node_2285": { + "node_id": "node_2285", + "content": "MODIFICATION: Increase 2 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 167.46 kg\n Factor of Safety: 1.08\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.45518974588683, + "fos_buckling": 1.081046463299171, + "fos_yielding": 3.1801393557617303, + "deflection": 0.0019423021233512488, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.333)" + }, + "parent_node_id": "node_2284", + "improvement_over_parent": null + }, + "node_2286": { + "node_id": "node_2286", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 190.49 kg\n Factor of Safety: 1.20\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.49250157958988, + "fos_buckling": 1.195786474557715, + "fos_yielding": 3.616049123142997, + "deflection": 0.0017101385469468558, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.149)" + }, + "parent_node_id": "node_2285", + "improvement_over_parent": null + }, + "node_2287": { + "node_id": "node_2287", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 195.01 kg\n Factor of Safety: 1.40\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.0146203785729, + "fos_buckling": 1.4033352476884144, + "fos_yielding": 3.6279774364420994, + "deflection": 0.0016575622849309304, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002051)" + }, + "parent_node_id": "node_2286", + "improvement_over_parent": null + }, + "node_2288": { + "node_id": "node_2288", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23812116465325, + "fos_buckling": 1.5679018357328807, + "fos_yielding": 4.150944446162556, + "deflection": 0.0014505766991906154, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.159)" + }, + "parent_node_id": "node_2287", + "improvement_over_parent": null + }, + "node_2289": { + "node_id": "node_2289", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2288", + "improvement_over_parent": null + }, + "node_2290": { + "node_id": "node_2290", + "content": "INITIAL DESIGN (Trace 331)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 170.86 kg\n Factor of Safety: 1.06\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.85591851509844, + "fos_buckling": 1.0578611949954275, + "fos_yielding": 3.3956324271943763, + "deflection": 0.001954052877753014, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2291": { + "node_id": "node_2291", + "content": "MODIFICATION: Increase 6 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 177.75 kg\n Factor of Safety: 1.28\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.74930812282372, + "fos_buckling": 1.278482951271786, + "fos_yielding": 3.395632427194377, + "deflection": 0.0018125038128027284, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.261)" + }, + "parent_node_id": "node_2290", + "improvement_over_parent": null + }, + "node_2292": { + "node_id": "node_2292", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.68 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.67857717092312, + "fos_buckling": 1.5225470016951008, + "fos_yielding": 4.194412292851671, + "deflection": 0.001470742760557887, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.259)" + }, + "parent_node_id": "node_2291", + "improvement_over_parent": null + }, + "node_2293": { + "node_id": "node_2293", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23298450662114, + "fos_buckling": 1.5678050798950012, + "fos_yielding": 4.150682371217644, + "deflection": 0.0014505714243950197, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2292", + "improvement_over_parent": null + }, + "node_2294": { + "node_id": "node_2294", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2293", + "improvement_over_parent": null + }, + "node_2295": { + "node_id": "node_2295", + "content": "INITIAL DESIGN (Trace 332)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 169.62 kg\n Factor of Safety: 1.16\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.62477942894796, + "fos_buckling": 1.161357956049542, + "fos_yielding": 3.3121908382995313, + "deflection": 0.0018669071569620583, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2296": { + "node_id": "node_2296", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 212.35 kg\n Factor of Safety: 1.37\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.3506488406398, + "fos_buckling": 1.3749011575120837, + "fos_yielding": 4.141290853539657, + "deflection": 0.0014961591147757312, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_2295", + "improvement_over_parent": null + }, + "node_2297": { + "node_id": "node_2297", + "content": "MODIFICATION: Increase 8 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.84 kg\n Factor of Safety: 1.37\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.84010947732634, + "fos_buckling": 1.3673155591773891, + "fos_yielding": 4.140992293808257, + "deflection": 0.0014967002695486136, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.610)" + }, + "parent_node_id": "node_2296", + "improvement_over_parent": null + }, + "node_2298": { + "node_id": "node_2298", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 222.01 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.014452354055, + "fos_buckling": 1.5526173337782787, + "fos_yielding": 4.15688211005069, + "deflection": 0.0014550454948479988, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2297", + "improvement_over_parent": null + }, + "node_2299": { + "node_id": "node_2299", + "content": "MODIFICATION: Increase 5 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0074)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 230.17 kg\n Factor of Safety: 1.29\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 230.17268087772973, + "fos_buckling": 1.2934648552564412, + "fos_yielding": 4.1619323036709295, + "deflection": 0.0014416989219960096, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.304)" + }, + "parent_node_id": "node_2298", + "improvement_over_parent": null + }, + "node_2300": { + "node_id": "node_2300", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2299", + "improvement_over_parent": null + }, + "node_2301": { + "node_id": "node_2301", + "content": "INITIAL DESIGN (Trace 333)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 158.77 kg\n Factor of Safety: 0.98\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.77368732898123, + "fos_buckling": 0.9793818766458162, + "fos_yielding": 3.499145649635878, + "deflection": 0.002107074564952863, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2302": { + "node_id": "node_2302", + "content": "MODIFICATION: Increase 1 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 161.09 kg\n Factor of Safety: 0.98\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.08921621397994, + "fos_buckling": 0.9791415200649004, + "fos_yielding": 3.499145649635878, + "deflection": 0.0020445941048495954, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.203)" + }, + "parent_node_id": "node_2301", + "improvement_over_parent": null + }, + "node_2303": { + "node_id": "node_2303", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 193.59 kg\n Factor of Safety: 1.15\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.59097819044928, + "fos_buckling": 1.1520397795953699, + "fos_yielding": 4.1983473572160115, + "deflection": 0.001708497014532507, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.220)" + }, + "parent_node_id": "node_2302", + "improvement_over_parent": null + }, + "node_2304": { + "node_id": "node_2304", + "content": "MODIFICATION: Increase 5 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 198.08 kg\n Factor of Safety: 1.15\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.08099567309634, + "fos_buckling": 1.1520397795953699, + "fos_yielding": 4.1983473572160115, + "deflection": 0.001708497014532507, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.190)" + }, + "parent_node_id": "node_2303", + "improvement_over_parent": null + }, + "node_2305": { + "node_id": "node_2305", + "content": "MODIFICATION: Increase 4 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 199.12 kg\n Factor of Safety: 1.15\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.1236749400077, + "fos_buckling": 1.15178583263802, + "fos_yielding": 4.1983473572160115, + "deflection": 0.00170523118312073, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.224)" + }, + "parent_node_id": "node_2304", + "improvement_over_parent": null + }, + "node_2306": { + "node_id": "node_2306", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 207.74 kg\n Factor of Safety: 1.15\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.73677955476836, + "fos_buckling": 1.150738146887675, + "fos_yielding": 4.13965799643669, + "deflection": 0.0016523993567080066, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2305", + "improvement_over_parent": null + }, + "node_2307": { + "node_id": "node_2307", + "content": "MODIFICATION: Increase 9 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0035)]\n\nPerformance:\n Mass: 210.42 kg\n Factor of Safety: 1.15\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.41778454325248, + "fos_buckling": 1.150412422131794, + "fos_yielding": 4.132488617581776, + "deflection": 0.0016488838922647444, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.355)" + }, + "parent_node_id": "node_2306", + "improvement_over_parent": null + }, + "node_2308": { + "node_id": "node_2308", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0035)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 215.59 kg\n Factor of Safety: 1.23\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.59212741998115, + "fos_buckling": 1.2276762967768464, + "fos_yielding": 4.154672505032861, + "deflection": 0.0015667541193278883, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2307", + "improvement_over_parent": null + }, + "node_2309": { + "node_id": "node_2309", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2308", + "improvement_over_parent": null + }, + "node_2310": { + "node_id": "node_2310", + "content": "INITIAL DESIGN (Trace 334)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 142.71 kg\n Factor of Safety: 0.79\n Max Deflection: 2.27e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.71249771120958, + "fos_buckling": 0.7940950942724685, + "fos_yielding": 2.725610832808459, + "deflection": 0.002269681532118193, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2311": { + "node_id": "node_2311", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 157.97 kg\n Factor of Safety: 0.87\n Max Deflection: 2.05e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.97070527310277, + "fos_buckling": 0.8666837940940287, + "fos_yielding": 3.0160843207157293, + "deflection": 0.0020526667899995158, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.114)" + }, + "parent_node_id": "node_2310", + "improvement_over_parent": null + }, + "node_2312": { + "node_id": "node_2312", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n\nPerformance:\n Mass: 161.73 kg\n Factor of Safety: 1.15\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.7330545084826, + "fos_buckling": 1.1548124925064007, + "fos_yielding": 3.025261602213393, + "deflection": 0.0019886207451179014, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001683)" + }, + "parent_node_id": "node_2311", + "improvement_over_parent": null + }, + "node_2313": { + "node_id": "node_2313", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 188.10 kg\n Factor of Safety: 1.31\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.10438132370055, + "fos_buckling": 1.3096410281621962, + "fos_yielding": 3.516774156062155, + "deflection": 0.0017127297773491378, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_2312", + "improvement_over_parent": null + }, + "node_2314": { + "node_id": "node_2314", + "content": "MODIFICATION: Increase 2 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 188.86 kg\n Factor of Safety: 1.37\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.85530273252263, + "fos_buckling": 1.366130419371826, + "fos_yielding": 3.5138009496754434, + "deflection": 0.001710947542654888, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.359)" + }, + "parent_node_id": "node_2313", + "improvement_over_parent": null + }, + "node_2315": { + "node_id": "node_2315", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24413781509162, + "fos_buckling": 1.5679230582511632, + "fos_yielding": 4.151081861930939, + "deflection": 0.001450530003762459, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_2314", + "improvement_over_parent": null + }, + "node_2316": { + "node_id": "node_2316", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2315", + "improvement_over_parent": null + }, + "node_2317": { + "node_id": "node_2317", + "content": "INITIAL DESIGN (Trace 335)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0014)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0017)]\n\nPerformance:\n Mass: 87.23 kg\n Factor of Safety: 0.51\n Max Deflection: 4.05e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 87.22925873668807, + "fos_buckling": 0.5124374250027774, + "fos_yielding": 1.7859798836548229, + "deflection": 0.0040475167411716745, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2318": { + "node_id": "node_2318", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n\nPerformance:\n Mass: 112.02 kg\n Factor of Safety: 0.65\n Max Deflection: 3.15e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.02217382212562, + "fos_buckling": 0.6490954528890154, + "fos_yielding": 2.291022900141672, + "deflection": 0.0031538451739491985, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.297)" + }, + "parent_node_id": "node_2317", + "improvement_over_parent": null + }, + "node_2319": { + "node_id": "node_2319", + "content": "MODIFICATION: Increase 1 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n\nPerformance:\n Mass: 113.96 kg\n Factor of Safety: 0.65\n Max Deflection: 3.03e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.95511564162918, + "fos_buckling": 0.6489620021927305, + "fos_yielding": 2.290960658673206, + "deflection": 0.003026764248398597, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.261)" + }, + "parent_node_id": "node_2318", + "improvement_over_parent": null + }, + "node_2320": { + "node_id": "node_2320", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n\nPerformance:\n Mass: 116.82 kg\n Factor of Safety: 0.70\n Max Deflection: 2.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.8162610661893, + "fos_buckling": 0.7038112249766917, + "fos_yielding": 2.3025311546012177, + "deflection": 0.002862454022952282, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001260)" + }, + "parent_node_id": "node_2319", + "improvement_over_parent": null + }, + "node_2321": { + "node_id": "node_2321", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n\nPerformance:\n Mass: 143.75 kg\n Factor of Safety: 0.85\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.75193961414152, + "fos_buckling": 0.8459943031438081, + "fos_yielding": 2.8305780193720746, + "deflection": 0.0023286716916415358, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.244)" + }, + "parent_node_id": "node_2320", + "improvement_over_parent": null + }, + "node_2322": { + "node_id": "node_2322", + "content": "MODIFICATION: Increase 10 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0022)]\n\nPerformance:\n Mass: 145.06 kg\n Factor of Safety: 0.89\n Max Deflection: 2.32e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.0575324742047, + "fos_buckling": 0.8896596996576678, + "fos_yielding": 2.8314489434672727, + "deflection": 0.0023207101429491873, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.404)" + }, + "parent_node_id": "node_2321", + "improvement_over_parent": null + }, + "node_2323": { + "node_id": "node_2323", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0026)]\n\nPerformance:\n Mass: 167.28 kg\n Factor of Safety: 1.01\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.28344106835263, + "fos_buckling": 1.013715835509163, + "fos_yielding": 3.2629756513474564, + "deflection": 0.0020140011065124014, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.164)" + }, + "parent_node_id": "node_2322", + "improvement_over_parent": null + }, + "node_2324": { + "node_id": "node_2324", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0033)]\n\nPerformance:\n Mass: 213.44 kg\n Factor of Safety: 1.26\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.4395664951576, + "fos_buckling": 1.2607975866003298, + "fos_yielding": 4.1570042389086925, + "deflection": 0.0015810282437513153, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.302)" + }, + "parent_node_id": "node_2323", + "improvement_over_parent": null + }, + "node_2325": { + "node_id": "node_2325", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2324", + "improvement_over_parent": null + }, + "node_2326": { + "node_id": "node_2326", + "content": "INITIAL DESIGN (Trace 336)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2327": { + "node_id": "node_2327", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 134.70 kg\n Factor of Safety: 0.05\n Max Deflection: 7.69e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.69644888751736, + "fos_buckling": 0.04984115886938382, + "fos_yielding": 1.1747421164368557, + "deflection": 0.0076901280126532336, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001478)" + }, + "parent_node_id": "node_2326", + "improvement_over_parent": null + }, + "node_2328": { + "node_id": "node_2328", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 138.80 kg\n Factor of Safety: 0.05\n Max Deflection: 7.68e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.8001789786917, + "fos_buckling": 0.04981942826289184, + "fos_yielding": 1.1742299321449783, + "deflection": 0.0076801170375588555, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001847)" + }, + "parent_node_id": "node_2327", + "improvement_over_parent": null + }, + "node_2329": { + "node_id": "node_2329", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 173.39 kg\n Factor of Safety: 1.28\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.38845928284397, + "fos_buckling": 1.2760880955677782, + "fos_yielding": 3.2932264058726055, + "deflection": 0.0018337697947368044, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004487)" + }, + "parent_node_id": "node_2328", + "improvement_over_parent": null + }, + "node_2330": { + "node_id": "node_2330", + "content": "MODIFICATION: Increase 9 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0030)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 175.68 kg\n Factor of Safety: 1.28\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.67842702904886, + "fos_buckling": 1.2812843198138113, + "fos_yielding": 3.293816830595117, + "deflection": 0.001830858102053514, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.629)" + }, + "parent_node_id": "node_2329", + "improvement_over_parent": null + }, + "node_2331": { + "node_id": "node_2331", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0039)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 221.55 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.55281110839763, + "fos_buckling": 1.553667179152352, + "fos_yielding": 4.151483702674328, + "deflection": 0.0014556124239070145, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_2330", + "improvement_over_parent": null + }, + "node_2332": { + "node_id": "node_2332", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2331", + "improvement_over_parent": null + }, + "node_2333": { + "node_id": "node_2333", + "content": "INITIAL DESIGN (Trace 337)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 154.94 kg\n Factor of Safety: 0.06\n Max Deflection: 6.73e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.93888016327264, + "fos_buckling": 0.05579540703009967, + "fos_yielding": 1.3416693035881524, + "deflection": 0.006731200132923379, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2334": { + "node_id": "node_2334", + "content": "MODIFICATION: Increase 0 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 158.26 kg\n Factor of Safety: 0.06\n Max Deflection: 6.73e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.2639691463069, + "fos_buckling": 0.05577572268513553, + "fos_yielding": 1.3411959692618092, + "deflection": 0.006732699310159112, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.279)" + }, + "parent_node_id": "node_2333", + "improvement_over_parent": null + }, + "node_2335": { + "node_id": "node_2335", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 162.96 kg\n Factor of Safety: 0.06\n Max Deflection: 6.72e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.95634972218778, + "fos_buckling": 0.05574796766715107, + "fos_yielding": 1.340528565659391, + "deflection": 0.006721875309244983, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002135)" + }, + "parent_node_id": "node_2334", + "improvement_over_parent": null + }, + "node_2336": { + "node_id": "node_2336", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 179.56 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.56425579684122, + "fos_buckling": 0.06035121676196464, + "fos_yielding": 1.4754098175380697, + "deflection": 0.006105868953732342, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.112)" + }, + "parent_node_id": "node_2335", + "improvement_over_parent": null + }, + "node_2337": { + "node_id": "node_2337", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.17531003960192, + "fos_buckling": 1.5674081629595766, + "fos_yielding": 4.149411332222876, + "deflection": 0.001450889312019643, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2336", + "improvement_over_parent": null + }, + "node_2338": { + "node_id": "node_2338", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2337", + "improvement_over_parent": null + }, + "node_2339": { + "node_id": "node_2339", + "content": "INITIAL DESIGN (Trace 338)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 173.99 kg\n Factor of Safety: 0.80\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.9945140765349, + "fos_buckling": 0.80168250701707, + "fos_yielding": 3.527365589674952, + "deflection": 0.0018903316564549855, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2340": { + "node_id": "node_2340", + "content": "MODIFICATION: Increase 10 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 183.67 kg\n Factor of Safety: 1.22\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.66553541504422, + "fos_buckling": 1.2199185890051567, + "fos_yielding": 3.5221127964011862, + "deflection": 0.0017258007486411723, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.395)" + }, + "parent_node_id": "node_2339", + "improvement_over_parent": null + }, + "node_2341": { + "node_id": "node_2341", + "content": "MODIFICATION: Increase 3 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 185.25 kg\n Factor of Safety: 1.36\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.25081442038513, + "fos_buckling": 1.361231471804582, + "fos_yielding": 3.5232975151620187, + "deflection": 0.0017202908398984348, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.613)" + }, + "parent_node_id": "node_2340", + "improvement_over_parent": null + }, + "node_2342": { + "node_id": "node_2342", + "content": "MODIFICATION: Increase 5 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 186.28 kg\n Factor of Safety: 1.36\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.27991983502733, + "fos_buckling": 1.3639790083041223, + "fos_yielding": 3.5210073104822275, + "deflection": 0.0017153685836954066, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.266)" + }, + "parent_node_id": "node_2341", + "improvement_over_parent": null + }, + "node_2343": { + "node_id": "node_2343", + "content": "MODIFICATION: Increase 8 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 188.85 kg\n Factor of Safety: 1.37\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.84841469927338, + "fos_buckling": 1.3663119074364354, + "fos_yielding": 3.5134687063921644, + "deflection": 0.0017109732275802229, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.587)" + }, + "parent_node_id": "node_2342", + "improvement_over_parent": null + }, + "node_2344": { + "node_id": "node_2344", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23614156808105, + "fos_buckling": 1.5681176783852846, + "fos_yielding": 4.150696337199985, + "deflection": 0.0014505513835925867, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_2343", + "improvement_over_parent": null + }, + "node_2345": { + "node_id": "node_2345", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2344", + "improvement_over_parent": null + }, + "node_2346": { + "node_id": "node_2346", + "content": "INITIAL DESIGN (Trace 339)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2347": { + "node_id": "node_2347", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 123.03 kg\n Factor of Safety: 0.15\n Max Deflection: 1.28e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.02803137175543, + "fos_buckling": 0.15467818295398034, + "fos_yielding": 1.8259764490236674, + "deflection": 12804023880626.676, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001797)" + }, + "parent_node_id": "node_2346", + "improvement_over_parent": null + }, + "node_2348": { + "node_id": "node_2348", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 135.77 kg\n Factor of Safety: 0.20\n Max Deflection: 2.51e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.76511123928822, + "fos_buckling": 0.20360392397369123, + "fos_yielding": 2.8833811958102666, + "deflection": 2514115073761.3027, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.111)" + }, + "parent_node_id": "node_2347", + "improvement_over_parent": null + }, + "node_2349": { + "node_id": "node_2349", + "content": "MODIFICATION: Increase 1 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 139.85 kg\n Factor of Safety: 0.20\n Max Deflection: 4.22e+12 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.84887688503028, + "fos_buckling": 0.20360392397369123, + "fos_yielding": 2.885544122966729, + "deflection": 4221653461036.2495, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.445)" + }, + "parent_node_id": "node_2348", + "improvement_over_parent": null + }, + "node_2350": { + "node_id": "node_2350", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 142.67 kg\n Factor of Safety: 0.05\n Max Deflection: 7.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.67363463956704, + "fos_buckling": 0.04988039806987972, + "fos_yielding": 1.1759887012048915, + "deflection": 0.007668177222525075, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001534)" + }, + "parent_node_id": "node_2349", + "improvement_over_parent": null + }, + "node_2351": { + "node_id": "node_2351", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 179.58 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.58356508924356, + "fos_buckling": 0.06038117677551917, + "fos_yielding": 1.4763247496066403, + "deflection": 0.0061048049485275206, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.284)" + }, + "parent_node_id": "node_2350", + "improvement_over_parent": null + }, + "node_2352": { + "node_id": "node_2352", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.19 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.19461933200427, + "fos_buckling": 1.5676244748721253, + "fos_yielding": 4.149982537452544, + "deflection": 0.0014508400112253207, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2351", + "improvement_over_parent": null + }, + "node_2353": { + "node_id": "node_2353", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2352", + "improvement_over_parent": null + }, + "node_2354": { + "node_id": "node_2354", + "content": "INITIAL DESIGN (Trace 340)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 90.91 kg\n Factor of Safety: 0.07\n Max Deflection: 9.34e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 90.90745573778283, + "fos_buckling": 0.07360209158502544, + "fos_yielding": 1.139177052645704, + "deflection": 0.009336970897457855, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2355": { + "node_id": "node_2355", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n\nPerformance:\n Mass: 92.78 kg\n Factor of Safety: 0.07\n Max Deflection: 9.33e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 92.78076451797068, + "fos_buckling": 0.07358739551098654, + "fos_yielding": 1.1389495940239642, + "deflection": 0.009333413048598471, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000993)" + }, + "parent_node_id": "node_2354", + "improvement_over_parent": null + }, + "node_2356": { + "node_id": "node_2356", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 107.76 kg\n Factor of Safety: 0.08\n Max Deflection: 8.04e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.76078479755475, + "fos_buckling": 0.08415988204114283, + "fos_yielding": 1.3212374462525478, + "deflection": 0.008042384014849501, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.170)" + }, + "parent_node_id": "node_2355", + "improvement_over_parent": null + }, + "node_2357": { + "node_id": "node_2357", + "content": "MODIFICATION: Increase 0 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 110.50 kg\n Factor of Safety: 0.08\n Max Deflection: 7.88e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.4976073823459, + "fos_buckling": 0.08413536505038595, + "fos_yielding": 1.320852550676749, + "deflection": 0.00787569668296563, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.350)" + }, + "parent_node_id": "node_2356", + "improvement_over_parent": null + }, + "node_2358": { + "node_id": "node_2358", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 136.59 kg\n Factor of Safety: 1.03\n Max Deflection: 2.36e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.58761173227174, + "fos_buckling": 1.0318794196392473, + "fos_yielding": 2.543707313640049, + "deflection": 0.002357869815617703, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003366)" + }, + "parent_node_id": "node_2357", + "improvement_over_parent": null + }, + "node_2359": { + "node_id": "node_2359", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 169.91 kg\n Factor of Safety: 1.25\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.9133085793393, + "fos_buckling": 1.2487856178511891, + "fos_yielding": 3.162455576937233, + "deflection": 0.0018994094084863653, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.261)" + }, + "parent_node_id": "node_2358", + "improvement_over_parent": null + }, + "node_2360": { + "node_id": "node_2360", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 193.15 kg\n Factor of Safety: 1.39\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.1530307238698, + "fos_buckling": 1.3920489275175398, + "fos_yielding": 3.5935044361538675, + "deflection": 0.0016733288040784173, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.148)" + }, + "parent_node_id": "node_2359", + "improvement_over_parent": null + }, + "node_2361": { + "node_id": "node_2361", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21951194062086, + "fos_buckling": 1.5676988473718931, + "fos_yielding": 4.150644664630795, + "deflection": 0.0014506852053615168, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_2360", + "improvement_over_parent": null + }, + "node_2362": { + "node_id": "node_2362", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2361", + "improvement_over_parent": null + }, + "node_2363": { + "node_id": "node_2363", + "content": "INITIAL DESIGN (Trace 341)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2364": { + "node_id": "node_2364", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 179.69 kg\n Factor of Safety: 1.34\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.69339362923424, + "fos_buckling": 1.3420408525300238, + "fos_yielding": 3.567505456469057, + "deflection": 0.0019718130496803052, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002123)" + }, + "parent_node_id": "node_2363", + "improvement_over_parent": null + }, + "node_2365": { + "node_id": "node_2365", + "content": "MODIFICATION: Increase 1 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 183.75 kg\n Factor of Safety: 1.34\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.74643569965755, + "fos_buckling": 1.341465305746616, + "fos_yielding": 3.786534329481265, + "deflection": 0.0017882380545548547, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.502)" + }, + "parent_node_id": "node_2364", + "improvement_over_parent": null + }, + "node_2366": { + "node_id": "node_2366", + "content": "MODIFICATION: Increase 1 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 186.94 kg\n Factor of Safety: 1.34\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.93819652325712, + "fos_buckling": 1.3410124113783106, + "fos_yielding": 3.786534329481265, + "deflection": 0.001710598625291653, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.274)" + }, + "parent_node_id": "node_2365", + "improvement_over_parent": null + }, + "node_2367": { + "node_id": "node_2367", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 198.26 kg\n Factor of Safety: 1.40\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.26143061829296, + "fos_buckling": 1.4002797689441888, + "fos_yielding": 3.786534329481267, + "deflection": 0.0016272290050492958, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002767)" + }, + "parent_node_id": "node_2366", + "improvement_over_parent": null + }, + "node_2368": { + "node_id": "node_2368", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n\nPerformance:\n Mass: 201.47 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.46920670676602, + "fos_buckling": 1.4416929619679906, + "fos_yielding": 3.747468223817141, + "deflection": 0.0016050201748677745, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001760)" + }, + "parent_node_id": "node_2367", + "improvement_over_parent": null + }, + "node_2369": { + "node_id": "node_2369", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28507214206962, + "fos_buckling": 1.5680326487183318, + "fos_yielding": 4.151643237255965, + "deflection": 0.0014501949564555724, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_2368", + "improvement_over_parent": null + }, + "node_2370": { + "node_id": "node_2370", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2369", + "improvement_over_parent": null + }, + "node_2371": { + "node_id": "node_2371", + "content": "INITIAL DESIGN (Trace 342)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n\nPerformance:\n Mass: 133.00 kg\n Factor of Safety: 0.71\n Max Deflection: 2.61e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 133.0018692147342, + "fos_buckling": 0.7120958470855219, + "fos_yielding": 3.0513682008749385, + "deflection": 0.002614847823812039, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2372": { + "node_id": "node_2372", + "content": "MODIFICATION: Increase 7 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n\nPerformance:\n Mass: 141.54 kg\n Factor of Safety: 0.71\n Max Deflection: 2.38e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.5368413584687, + "fos_buckling": 0.7110596721219484, + "fos_yielding": 3.0513682008749385, + "deflection": 0.002376082344807051, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.393)" + }, + "parent_node_id": "node_2371", + "improvement_over_parent": null + }, + "node_2373": { + "node_id": "node_2373", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 147.80 kg\n Factor of Safety: 0.67\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.79673106093037, + "fos_buckling": 0.6741405706319212, + "fos_yielding": 3.036336567690125, + "deflection": 0.0023668907492390354, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001816)" + }, + "parent_node_id": "node_2372", + "improvement_over_parent": null + }, + "node_2374": { + "node_id": "node_2374", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 180.01 kg\n Factor of Safety: 0.82\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.00568132341223, + "fos_buckling": 0.8153740941843837, + "fos_yielding": 3.6919994566781806, + "deflection": 0.0019440248600579382, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.235)" + }, + "parent_node_id": "node_2373", + "improvement_over_parent": null + }, + "node_2375": { + "node_id": "node_2375", + "content": "MODIFICATION: Increase 5 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 181.47 kg\n Factor of Safety: 0.81\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.46501612150124, + "fos_buckling": 0.8121936155072256, + "fos_yielding": 3.6845669445639633, + "deflection": 0.0019285135331436791, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.397)" + }, + "parent_node_id": "node_2374", + "improvement_over_parent": null + }, + "node_2376": { + "node_id": "node_2376", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 205.38 kg\n Factor of Safety: 0.90\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.37712313854976, + "fos_buckling": 0.9012247514558739, + "fos_yielding": 4.16541115588398, + "deflection": 0.0017045271267408285, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_2375", + "improvement_over_parent": null + }, + "node_2377": { + "node_id": "node_2377", + "content": "MODIFICATION: Increase 10 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n\nPerformance:\n Mass: 207.89 kg\n Factor of Safety: 0.90\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.89094163733242, + "fos_buckling": 0.9033209277800857, + "fos_yielding": 4.16143753349654, + "deflection": 0.0017033790693676018, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.332)" + }, + "parent_node_id": "node_2376", + "improvement_over_parent": null + }, + "node_2378": { + "node_id": "node_2378", + "content": "MODIFICATION: Increase 10 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0046)]\n\nPerformance:\n Mass: 211.09 kg\n Factor of Safety: 0.90\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.09426418420506, + "fos_buckling": 0.9049876648559487, + "fos_yielding": 4.1574583604766735, + "deflection": 0.0017023932344898953, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.346)" + }, + "parent_node_id": "node_2377", + "improvement_over_parent": null + }, + "node_2379": { + "node_id": "node_2379", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2378", + "improvement_over_parent": null + }, + "node_2380": { + "node_id": "node_2380", + "content": "INITIAL DESIGN (Trace 343)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 170.69 kg\n Factor of Safety: 1.22\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.68606954243594, + "fos_buckling": 1.2200921029855325, + "fos_yielding": 3.341796990117894, + "deflection": 0.0019672288425487245, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2381": { + "node_id": "node_2381", + "content": "MODIFICATION: Increase 0 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 172.79 kg\n Factor of Safety: 1.23\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.7938289881972, + "fos_buckling": 1.2273538389588217, + "fos_yielding": 3.3474511348447593, + "deflection": 0.0019065062470992379, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.186)" + }, + "parent_node_id": "node_2380", + "improvement_over_parent": null + }, + "node_2382": { + "node_id": "node_2382", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 177.69 kg\n Factor of Safety: 1.30\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.69099435275442, + "fos_buckling": 1.2975464270116268, + "fos_yielding": 3.3067390454408487, + "deflection": 0.0018171721446994164, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002002)" + }, + "parent_node_id": "node_2381", + "improvement_over_parent": null + }, + "node_2383": { + "node_id": "node_2383", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.33 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33209258992886, + "fos_buckling": 1.5684269720256252, + "fos_yielding": 4.1527097435322196, + "deflection": 0.001449971735097674, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.282)" + }, + "parent_node_id": "node_2382", + "improvement_over_parent": null + }, + "node_2384": { + "node_id": "node_2384", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2383", + "improvement_over_parent": null + }, + "node_2385": { + "node_id": "node_2385", + "content": "INITIAL DESIGN (Trace 344)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 149.43 kg\n Factor of Safety: 0.03\n Max Deflection: 1.88e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.42566862293373, + "fos_buckling": 0.03218414693986982, + "fos_yielding": 0.540633974214425, + "deflection": 18789617847876.22, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2386": { + "node_id": "node_2386", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 158.04 kg\n Factor of Safety: 0.03\n Max Deflection: 1.21e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.0387732376944, + "fos_buckling": 0.03207677999061903, + "fos_yielding": 0.7176451001309582, + "deflection": 0.012056212313587921, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2385", + "improvement_over_parent": null + }, + "node_2387": { + "node_id": "node_2387", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 201.65 kg\n Factor of Safety: 1.16\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.6498274804551, + "fos_buckling": 1.1611929216682433, + "fos_yielding": 2.8885701527422705, + "deflection": 0.0015198212292093609, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2386", + "improvement_over_parent": null + }, + "node_2388": { + "node_id": "node_2388", + "content": "MODIFICATION: Increase 4 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 212.79 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.78919847280847, + "fos_buckling": 1.4822351500809516, + "fos_yielding": 4.201872931689211, + "deflection": 0.0015202151656967908, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.511)" + }, + "parent_node_id": "node_2387", + "improvement_over_parent": null + }, + "node_2389": { + "node_id": "node_2389", + "content": "MODIFICATION: Increase 2 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 213.49 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.49331560784674, + "fos_buckling": 1.4827673325548554, + "fos_yielding": 4.202225581373273, + "deflection": 0.0015203216160018676, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.433)" + }, + "parent_node_id": "node_2388", + "improvement_over_parent": null + }, + "node_2390": { + "node_id": "node_2390", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.65 kg\n Factor of Safety: 1.38\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.64713034614456, + "fos_buckling": 1.3829065717825597, + "fos_yielding": 4.156401296545532, + "deflection": 0.0014563996379016637, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2389", + "improvement_over_parent": null + }, + "node_2391": { + "node_id": "node_2391", + "content": "MODIFICATION: Increase 2 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 220.77 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.7724200510077, + "fos_buckling": 1.5577953378721725, + "fos_yielding": 4.151452373088586, + "deflection": 0.0014542456328701888, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.508)" + }, + "parent_node_id": "node_2390", + "improvement_over_parent": null + }, + "node_2392": { + "node_id": "node_2392", + "content": "MODIFICATION: Increase 9 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0074)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 231.34 kg\n Factor of Safety: 1.56\n Max Deflection: 1.37e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 231.33775699208442, + "fos_buckling": 1.561248025006452, + "fos_yielding": 4.172135216513132, + "deflection": 0.0013745069662467412, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.274)" + }, + "parent_node_id": "node_2391", + "improvement_over_parent": null + }, + "node_2393": { + "node_id": "node_2393", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2392", + "improvement_over_parent": null + }, + "node_2394": { + "node_id": "node_2394", + "content": "INITIAL DESIGN (Trace 345)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 171.18 kg\n Factor of Safety: 1.27\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.18245432940287, + "fos_buckling": 1.2728030228072065, + "fos_yielding": 3.5558551781650274, + "deflection": 0.0018157592077329204, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2395": { + "node_id": "node_2395", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 178.48 kg\n Factor of Safety: 1.18\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.47667814613226, + "fos_buckling": 1.1799515914529144, + "fos_yielding": 3.5073638514985896, + "deflection": 0.0017620490725111294, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002140)" + }, + "parent_node_id": "node_2394", + "improvement_over_parent": null + }, + "node_2396": { + "node_id": "node_2396", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 189.11 kg\n Factor of Safety: 1.37\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.10730956596655, + "fos_buckling": 1.3676671598570431, + "fos_yielding": 3.518457263489853, + "deflection": 0.0017087017496382152, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002584)" + }, + "parent_node_id": "node_2395", + "improvement_over_parent": null + }, + "node_2397": { + "node_id": "node_2397", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.37 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.36745489078885, + "fos_buckling": 1.5686280871493998, + "fos_yielding": 4.153346457475716, + "deflection": 0.0014497463738693068, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_2396", + "improvement_over_parent": null + }, + "node_2398": { + "node_id": "node_2398", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2397", + "improvement_over_parent": null + }, + "node_2399": { + "node_id": "node_2399", + "content": "INITIAL DESIGN (Trace 346)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 155.50 kg\n Factor of Safety: 1.02\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.4959191553442, + "fos_buckling": 1.018941634490609, + "fos_yielding": 2.9536691789412557, + "deflection": 0.0020899587098216627, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2400": { + "node_id": "node_2400", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 187.29 kg\n Factor of Safety: 1.18\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.2861406084249, + "fos_buckling": 1.1808057845625035, + "fos_yielding": 3.555369921913432, + "deflection": 0.001739037353904883, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.221)" + }, + "parent_node_id": "node_2399", + "improvement_over_parent": null + }, + "node_2401": { + "node_id": "node_2401", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.14 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.14457944198458, + "fos_buckling": 1.3241900250477188, + "fos_yielding": 4.138736338983786, + "deflection": 0.0014962283617843686, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_2400", + "improvement_over_parent": null + }, + "node_2402": { + "node_id": "node_2402", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31892231871325, + "fos_buckling": 1.5683511547570512, + "fos_yielding": 4.152480589878786, + "deflection": 0.0014500479723645648, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2401", + "improvement_over_parent": null + }, + "node_2403": { + "node_id": "node_2403", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2402", + "improvement_over_parent": null + }, + "node_2404": { + "node_id": "node_2404", + "content": "INITIAL DESIGN (Trace 347)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 183.12 kg\n Factor of Safety: 1.17\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.11862483214048, + "fos_buckling": 1.1702771156841871, + "fos_yielding": 2.9172988172787684, + "deflection": 0.0016602129890728532, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2405": { + "node_id": "node_2405", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 190.73 kg\n Factor of Safety: 1.17\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.73330102369414, + "fos_buckling": 1.166837528793646, + "fos_yielding": 2.9087245209576476, + "deflection": 0.0016556160747233668, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002242)" + }, + "parent_node_id": "node_2404", + "improvement_over_parent": null + }, + "node_2406": { + "node_id": "node_2406", + "content": "MODIFICATION: Increase 4 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 197.36 kg\n Factor of Safety: 1.42\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 197.35969089839725, + "fos_buckling": 1.4174129327834173, + "fos_yielding": 3.6707328380751014, + "deflection": 0.0016380636363170153, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.295)" + }, + "parent_node_id": "node_2405", + "improvement_over_parent": null + }, + "node_2407": { + "node_id": "node_2407", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22555495092115, + "fos_buckling": 1.5678697607671506, + "fos_yielding": 4.1499110890282624, + "deflection": 0.0014506177617321276, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_2406", + "improvement_over_parent": null + }, + "node_2408": { + "node_id": "node_2408", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2407", + "improvement_over_parent": null + }, + "node_2409": { + "node_id": "node_2409", + "content": "INITIAL DESIGN (Trace 348)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 138.87 kg\n Factor of Safety: 0.96\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.8698237535508, + "fos_buckling": 0.9579418990738096, + "fos_yielding": 2.332434072859403, + "deflection": 0.0022368962186549717, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2410": { + "node_id": "node_2410", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 141.36 kg\n Factor of Safety: 0.96\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.36249764581942, + "fos_buckling": 0.9596758134514879, + "fos_yielding": 2.336655874805667, + "deflection": 0.0022378228156848955, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001342)" + }, + "parent_node_id": "node_2409", + "improvement_over_parent": null + }, + "node_2411": { + "node_id": "node_2411", + "content": "MODIFICATION: Increase 4 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 145.97 kg\n Factor of Safety: 0.96\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.96932384950657, + "fos_buckling": 0.9634812747127683, + "fos_yielding": 2.3459215594127802, + "deflection": 0.002238489854150119, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.279)" + }, + "parent_node_id": "node_2410", + "improvement_over_parent": null + }, + "node_2412": { + "node_id": "node_2412", + "content": "MODIFICATION: Increase 0 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 147.96 kg\n Factor of Safety: 0.97\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.95873177772856, + "fos_buckling": 0.9652951193725745, + "fos_yielding": 2.350337978708665, + "deflection": 0.002162335186065412, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.200)" + }, + "parent_node_id": "node_2411", + "improvement_over_parent": null + }, + "node_2413": { + "node_id": "node_2413", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 173.15 kg\n Factor of Safety: 1.11\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.1516935780527, + "fos_buckling": 1.1134586222357998, + "fos_yielding": 2.7552693445793768, + "deflection": 0.0018504261382178634, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.183)" + }, + "parent_node_id": "node_2412", + "improvement_over_parent": null + }, + "node_2414": { + "node_id": "node_2414", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 178.20 kg\n Factor of Safety: 1.10\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.19870647356484, + "fos_buckling": 1.1022182202301398, + "fos_yielding": 2.727454808458802, + "deflection": 0.0017789809629748076, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002068)" + }, + "parent_node_id": "node_2413", + "improvement_over_parent": null + }, + "node_2415": { + "node_id": "node_2415", + "content": "MODIFICATION: Increase 6 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0025)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 179.65 kg\n Factor of Safety: 1.10\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.64787344633882, + "fos_buckling": 1.1018689730311761, + "fos_yielding": 2.726590591251473, + "deflection": 0.001778632348645748, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.225)" + }, + "parent_node_id": "node_2414", + "improvement_over_parent": null + }, + "node_2416": { + "node_id": "node_2416", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0060)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0031)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.12 kg\n Factor of Safety: 1.31\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.1166430314167, + "fos_buckling": 1.3145941186870433, + "fos_yielding": 3.335715781046977, + "deflection": 0.0014619494497313593, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.241)" + }, + "parent_node_id": "node_2415", + "improvement_over_parent": null + }, + "node_2417": { + "node_id": "node_2417", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2416", + "improvement_over_parent": null + }, + "node_2418": { + "node_id": "node_2418", + "content": "INITIAL DESIGN (Trace 349)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 127.15 kg\n Factor of Safety: 0.05\n Max Deflection: 1.34e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.15194582070235, + "fos_buckling": 0.04658169096465422, + "fos_yielding": 1.0865457118751665, + "deflection": 0.013428061139736791, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2419": { + "node_id": "node_2419", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 145.19 kg\n Factor of Safety: 0.05\n Max Deflection: 1.18e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.1864419151024, + "fos_buckling": 0.05217506324935232, + "fos_yielding": 1.2391747616484832, + "deflection": 0.011767574661078067, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.153)" + }, + "parent_node_id": "node_2418", + "improvement_over_parent": null + }, + "node_2420": { + "node_id": "node_2420", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 173.48 kg\n Factor of Safety: 0.06\n Max Deflection: 9.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.47673789096342, + "fos_buckling": 0.06044778900730558, + "fos_yielding": 1.477867980263783, + "deflection": 0.009858378351741017, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.214)" + }, + "parent_node_id": "node_2419", + "improvement_over_parent": null + }, + "node_2421": { + "node_id": "node_2421", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 179.63 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.63055262926125, + "fos_buckling": 0.06036898582364264, + "fos_yielding": 1.4759413473167244, + "deflection": 0.006103490620346472, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2420", + "improvement_over_parent": null + }, + "node_2422": { + "node_id": "node_2422", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24160687202195, + "fos_buckling": 1.567871387835768, + "fos_yielding": 4.1508735047969365, + "deflection": 0.0014505315668823112, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2421", + "improvement_over_parent": null + }, + "node_2423": { + "node_id": "node_2423", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2422", + "improvement_over_parent": null + }, + "node_2424": { + "node_id": "node_2424", + "content": "INITIAL DESIGN (Trace 350)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 166.61 kg\n Factor of Safety: 0.92\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.61489473102955, + "fos_buckling": 0.92082281631308, + "fos_yielding": 2.6591277218157092, + "deflection": 0.0018868632715638278, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2425": { + "node_id": "node_2425", + "content": "MODIFICATION: Increase 2 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 167.65 kg\n Factor of Safety: 0.95\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.6462753480912, + "fos_buckling": 0.9508812173739604, + "fos_yielding": 2.6602217647894832, + "deflection": 0.0018829157397984393, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.629)" + }, + "parent_node_id": "node_2424", + "improvement_over_parent": null + }, + "node_2426": { + "node_id": "node_2426", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.22 kg\n Factor of Safety: 1.19\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.22101122586258, + "fos_buckling": 1.1893288605180263, + "fos_yielding": 3.415834979260247, + "deflection": 0.0014783508699388033, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.304)" + }, + "parent_node_id": "node_2425", + "improvement_over_parent": null + }, + "node_2427": { + "node_id": "node_2427", + "content": "MODIFICATION: Increase 6 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.40 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3986704294037, + "fos_buckling": 1.5687817065092682, + "fos_yielding": 4.153682387546671, + "deflection": 0.0014496020421111751, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.473)" + }, + "parent_node_id": "node_2426", + "improvement_over_parent": null + }, + "node_2428": { + "node_id": "node_2428", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2427", + "improvement_over_parent": null + }, + "node_2429": { + "node_id": "node_2429", + "content": "INITIAL DESIGN (Trace 351)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2430": { + "node_id": "node_2430", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 171.99 kg\n Factor of Safety: 1.11\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.98710941341594, + "fos_buckling": 1.1109319463117564, + "fos_yielding": 3.1667246830121765, + "deflection": 0.0018470148934917102, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002022)" + }, + "parent_node_id": "node_2429", + "improvement_over_parent": null + }, + "node_2431": { + "node_id": "node_2431", + "content": "MODIFICATION: Increase 5 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 176.51 kg\n Factor of Safety: 1.27\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.51473561585834, + "fos_buckling": 1.270618407055588, + "fos_yielding": 3.3719153620993194, + "deflection": 0.001825214098983982, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.244)" + }, + "parent_node_id": "node_2430", + "improvement_over_parent": null + }, + "node_2432": { + "node_id": "node_2432", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 179.37 kg\n Factor of Safety: 1.31\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.37031124399564, + "fos_buckling": 1.3079455732476408, + "fos_yielding": 3.3375438894751395, + "deflection": 0.0018004712579975854, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001552)" + }, + "parent_node_id": "node_2431", + "improvement_over_parent": null + }, + "node_2433": { + "node_id": "node_2433", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3161426620692, + "fos_buckling": 1.5683263168012935, + "fos_yielding": 4.151993338145786, + "deflection": 0.001450169036904528, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.269)" + }, + "parent_node_id": "node_2432", + "improvement_over_parent": null + }, + "node_2434": { + "node_id": "node_2434", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2433", + "improvement_over_parent": null + }, + "node_2435": { + "node_id": "node_2435", + "content": "INITIAL DESIGN (Trace 352)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 156.96 kg\n Factor of Safety: 1.19\n Max Deflection: 2.06e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.9616223861956, + "fos_buckling": 1.1946876354769131, + "fos_yielding": 3.289047812589064, + "deflection": 0.0020634549358952473, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2436": { + "node_id": "node_2436", + "content": "MODIFICATION: Increase 1 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 160.63 kg\n Factor of Safety: 1.19\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.63127529960957, + "fos_buckling": 1.194222714460581, + "fos_yielding": 3.288282566344099, + "deflection": 0.0019323594098759412, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.389)" + }, + "parent_node_id": "node_2435", + "improvement_over_parent": null + }, + "node_2437": { + "node_id": "node_2437", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.53 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.53047468460304, + "fos_buckling": 1.4593257330068892, + "fos_yielding": 4.181751713583697, + "deflection": 0.0015209204332748835, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.300)" + }, + "parent_node_id": "node_2436", + "improvement_over_parent": null + }, + "node_2438": { + "node_id": "node_2438", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 217.08 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.0788323046993, + "fos_buckling": 1.4842908154737748, + "fos_yielding": 4.201246732525901, + "deflection": 0.0015206371312021145, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2437", + "improvement_over_parent": null + }, + "node_2439": { + "node_id": "node_2439", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23264704299712, + "fos_buckling": 1.5677654484163448, + "fos_yielding": 4.150641736435988, + "deflection": 0.0014505719007007645, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2438", + "improvement_over_parent": null + }, + "node_2440": { + "node_id": "node_2440", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2439", + "improvement_over_parent": null + }, + "node_2441": { + "node_id": "node_2441", + "content": "INITIAL DESIGN (Trace 353)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 156.84 kg\n Factor of Safety: 1.04\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.836862258195, + "fos_buckling": 1.0389159057021327, + "fos_yielding": 2.9357701736712003, + "deflection": 0.0019251350068238172, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2442": { + "node_id": "node_2442", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 178.77 kg\n Factor of Safety: 1.17\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.76853146024357, + "fos_buckling": 1.1687094634933455, + "fos_yielding": 3.3509321977354296, + "deflection": 0.0016921143756589983, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_2441", + "improvement_over_parent": null + }, + "node_2443": { + "node_id": "node_2443", + "content": "MODIFICATION: Increase 6 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 184.68 kg\n Factor of Safety: 1.38\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.67512654885624, + "fos_buckling": 1.3772368267680053, + "fos_yielding": 3.7083664476232547, + "deflection": 0.001671609083639548, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.305)" + }, + "parent_node_id": "node_2442", + "improvement_over_parent": null + }, + "node_2444": { + "node_id": "node_2444", + "content": "MODIFICATION: Increase 2 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 185.84 kg\n Factor of Safety: 1.38\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.83855412020074, + "fos_buckling": 1.377067340670829, + "fos_yielding": 3.708092249298521, + "deflection": 0.0016718061499493826, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.637)" + }, + "parent_node_id": "node_2443", + "improvement_over_parent": null + }, + "node_2445": { + "node_id": "node_2445", + "content": "MODIFICATION: Increase 8 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 189.62 kg\n Factor of Safety: 1.38\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.61803744522697, + "fos_buckling": 1.3765170398939721, + "fos_yielding": 3.708092249298521, + "deflection": 0.001661406596879869, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.560)" + }, + "parent_node_id": "node_2444", + "improvement_over_parent": null + }, + "node_2446": { + "node_id": "node_2446", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.64 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.64165073567034, + "fos_buckling": 1.5231767719609879, + "fos_yielding": 4.196245583948732, + "deflection": 0.0014702152757918034, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.145)" + }, + "parent_node_id": "node_2445", + "improvement_over_parent": null + }, + "node_2447": { + "node_id": "node_2447", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 221.94 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.93587455239972, + "fos_buckling": 1.5689425785616378, + "fos_yielding": 4.154684005936005, + "deflection": 0.0014519097077688315, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002140)" + }, + "parent_node_id": "node_2446", + "improvement_over_parent": null + }, + "node_2448": { + "node_id": "node_2448", + "content": "MODIFICATION: Increase 8 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0037)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 224.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 224.16098774336567, + "fos_buckling": 1.5704918978901965, + "fos_yielding": 4.155377039605042, + "deflection": 0.0014491925896024341, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.199)" + }, + "parent_node_id": "node_2447", + "improvement_over_parent": null + }, + "node_2449": { + "node_id": "node_2449", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2448", + "improvement_over_parent": null + }, + "node_2450": { + "node_id": "node_2450", + "content": "INITIAL DESIGN (Trace 354)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n\nPerformance:\n Mass: 107.33 kg\n Factor of Safety: 0.04\n Max Deflection: 1.66e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.33387842594743, + "fos_buckling": 0.04198855625443384, + "fos_yielding": 0.7878642944747388, + "deflection": 0.01655128500639149, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2451": { + "node_id": "node_2451", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 135.25 kg\n Factor of Safety: 1.05\n Max Deflection: 2.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.25405582078895, + "fos_buckling": 1.045669573729624, + "fos_yielding": 2.7646195523428987, + "deflection": 0.002500495429203418, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003616)" + }, + "parent_node_id": "node_2450", + "improvement_over_parent": null + }, + "node_2452": { + "node_id": "node_2452", + "content": "MODIFICATION: Increase 1 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 138.76 kg\n Factor of Safety: 1.03\n Max Deflection: 2.31e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.76364034544252, + "fos_buckling": 1.033886628310989, + "fos_yielding": 2.7537113589868314, + "deflection": 0.002314955435938716, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.466)" + }, + "parent_node_id": "node_2451", + "improvement_over_parent": null + }, + "node_2453": { + "node_id": "node_2453", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 178.32 kg\n Factor of Safety: 1.28\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.31502822090135, + "fos_buckling": 1.2838540166046146, + "fos_yielding": 3.534571789226331, + "deflection": 0.0018054005982971627, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_2452", + "improvement_over_parent": null + }, + "node_2454": { + "node_id": "node_2454", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 211.82 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.82302408630233, + "fos_buckling": 1.480285286228584, + "fos_yielding": 4.194657085259865, + "deflection": 0.0015226273245101617, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.206)" + }, + "parent_node_id": "node_2453", + "improvement_over_parent": null + }, + "node_2455": { + "node_id": "node_2455", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 217.98 kg\n Factor of Safety: 1.48\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.97683882460015, + "fos_buckling": 1.4840672665023447, + "fos_yielding": 4.146287750610111, + "deflection": 0.0014611087166402205, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2454", + "improvement_over_parent": null + }, + "node_2456": { + "node_id": "node_2456", + "content": "MODIFICATION: Increase 9 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0090)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 238.97 kg\n Factor of Safety: 1.30\n Max Deflection: 1.33e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 238.96784851621354, + "fos_buckling": 1.3036806357446011, + "fos_yielding": 4.140494721955554, + "deflection": 0.0013271008464129435, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.575)" + }, + "parent_node_id": "node_2455", + "improvement_over_parent": null + }, + "node_2457": { + "node_id": "node_2457", + "content": "MODIFICATION: Increase 2 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0090)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 239.64 kg\n Factor of Safety: 1.47\n Max Deflection: 1.33e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 239.63919728748832, + "fos_buckling": 1.4664930274390662, + "fos_yielding": 4.137458278882375, + "deflection": 0.0013256730148619516, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.256)" + }, + "parent_node_id": "node_2456", + "improvement_over_parent": null + }, + "node_2458": { + "node_id": "node_2458", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2457", + "improvement_over_parent": null + }, + "node_2459": { + "node_id": "node_2459", + "content": "INITIAL DESIGN (Trace 355)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 104.83 kg\n Factor of Safety: 0.16\n Max Deflection: 9.82e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 104.83103579370527, + "fos_buckling": 0.1610645319734413, + "fos_yielding": 2.413930127003387, + "deflection": 9818723993411.035, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2460": { + "node_id": "node_2460", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 120.84 kg\n Factor of Safety: 0.04\n Max Deflection: 4.78e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.83661158594293, + "fos_buckling": 0.038543129265114426, + "fos_yielding": 0.540633974214425, + "deflection": 47804893598198.02, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_2459", + "improvement_over_parent": null + }, + "node_2461": { + "node_id": "node_2461", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 130.10 kg\n Factor of Safety: 0.02\n Max Deflection: 2.38e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.10483020060263, + "fos_buckling": 0.022822326055232846, + "fos_yielding": 0.6407821872987547, + "deflection": 23816071496079.73, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002230)" + }, + "parent_node_id": "node_2460", + "improvement_over_parent": null + }, + "node_2462": { + "node_id": "node_2462", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n\nPerformance:\n Mass: 162.31 kg\n Factor of Safety: 1.18\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.31255022697553, + "fos_buckling": 1.1826163164232237, + "fos_yielding": 3.1018085050351107, + "deflection": 0.001982930100236663, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004157)" + }, + "parent_node_id": "node_2461", + "improvement_over_parent": null + }, + "node_2463": { + "node_id": "node_2463", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n\nPerformance:\n Mass: 185.91 kg\n Factor of Safety: 1.33\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.9123471558205, + "fos_buckling": 1.3270967403736664, + "fos_yielding": 3.5517405250536354, + "deflection": 0.0017339982689874834, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.157)" + }, + "parent_node_id": "node_2462", + "improvement_over_parent": null + }, + "node_2464": { + "node_id": "node_2464", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 188.92 kg\n Factor of Safety: 1.37\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.91950649354277, + "fos_buckling": 1.3666212668058015, + "fos_yielding": 3.5153122067602074, + "deflection": 0.0017103965152246178, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001641)" + }, + "parent_node_id": "node_2463", + "improvement_over_parent": null + }, + "node_2465": { + "node_id": "node_2465", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3186771503582, + "fos_buckling": 1.5684538789449018, + "fos_yielding": 4.15283484035575, + "deflection": 0.0014500722039310183, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_2464", + "improvement_over_parent": null + }, + "node_2466": { + "node_id": "node_2466", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2465", + "improvement_over_parent": null + }, + "node_2467": { + "node_id": "node_2467", + "content": "INITIAL DESIGN (Trace 356)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 169.91 kg\n Factor of Safety: 1.16\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.9096364348586, + "fos_buckling": 1.1597377061631584, + "fos_yielding": 3.4142292492361084, + "deflection": 0.0019322447693085718, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2468": { + "node_id": "node_2468", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 180.25 kg\n Factor of Safety: 1.18\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.25411140889233, + "fos_buckling": 1.1776589909032178, + "fos_yielding": 3.428407902740328, + "deflection": 0.0018494495869062948, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002509)" + }, + "parent_node_id": "node_2467", + "improvement_over_parent": null + }, + "node_2469": { + "node_id": "node_2469", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 218.89 kg\n Factor of Safety: 1.38\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.89012044624786, + "fos_buckling": 1.3793850595658672, + "fos_yielding": 4.159054715210883, + "deflection": 0.0015257075242470217, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.235)" + }, + "parent_node_id": "node_2468", + "improvement_over_parent": null + }, + "node_2470": { + "node_id": "node_2470", + "content": "MODIFICATION: Increase 1 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.43 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4300179099855, + "fos_buckling": 1.5691260265644833, + "fos_yielding": 4.154773578951025, + "deflection": 0.0014494160422703448, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.383)" + }, + "parent_node_id": "node_2469", + "improvement_over_parent": null + }, + "node_2471": { + "node_id": "node_2471", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2470", + "improvement_over_parent": null + }, + "node_2472": { + "node_id": "node_2472", + "content": "INITIAL DESIGN (Trace 357)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 170.42 kg\n Factor of Safety: 1.23\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.41568932973436, + "fos_buckling": 1.231222409586533, + "fos_yielding": 3.23438511853116, + "deflection": 0.0018729689996204108, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2473": { + "node_id": "node_2473", + "content": "MODIFICATION: Increase 5 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 171.64 kg\n Factor of Safety: 1.27\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.64211857395313, + "fos_buckling": 1.2713508436965029, + "fos_yielding": 3.2312428095101255, + "deflection": 0.0018652517664448952, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.370)" + }, + "parent_node_id": "node_2472", + "improvement_over_parent": null + }, + "node_2474": { + "node_id": "node_2474", + "content": "MODIFICATION: Increase 8 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 173.37 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.36605085668512, + "fos_buckling": 1.270571518344017, + "fos_yielding": 3.226530503215309, + "deflection": 0.0018619842741248846, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.372)" + }, + "parent_node_id": "node_2473", + "improvement_over_parent": null + }, + "node_2475": { + "node_id": "node_2475", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 196.56 kg\n Factor of Safety: 1.41\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.55810182018556, + "fos_buckling": 1.4125806784845334, + "fos_yielding": 3.6566439211641155, + "deflection": 0.0016446917279444651, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.145)" + }, + "parent_node_id": "node_2474", + "improvement_over_parent": null + }, + "node_2476": { + "node_id": "node_2476", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21443065115182, + "fos_buckling": 1.567763699910647, + "fos_yielding": 4.15056477215974, + "deflection": 0.0014507158244799526, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.149)" + }, + "parent_node_id": "node_2475", + "improvement_over_parent": null + }, + "node_2477": { + "node_id": "node_2477", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2476", + "improvement_over_parent": null + }, + "node_2478": { + "node_id": "node_2478", + "content": "INITIAL DESIGN (Trace 358)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 103.00 kg\n Factor of Safety: 0.75\n Max Deflection: 3.04e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 103.00087096976378, + "fos_buckling": 0.7450073523141124, + "fos_yielding": 2.027038590573828, + "deflection": 0.0030372806388246996, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2479": { + "node_id": "node_2479", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 132.95 kg\n Factor of Safety: 0.93\n Max Deflection: 2.36e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 132.95159134882206, + "fos_buckling": 0.9282409208187461, + "fos_yielding": 2.6149705061229946, + "deflection": 0.0023579610770406334, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_2478", + "improvement_over_parent": null + }, + "node_2480": { + "node_id": "node_2480", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 147.58 kg\n Factor of Safety: 1.01\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.5774584544025, + "fos_buckling": 1.0125599689182467, + "fos_yielding": 2.9018321832730196, + "deflection": 0.002126429973604298, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.117)" + }, + "parent_node_id": "node_2479", + "improvement_over_parent": null + }, + "node_2481": { + "node_id": "node_2481", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 170.09 kg\n Factor of Safety: 1.14\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.08621748944964, + "fos_buckling": 1.135878063265091, + "fos_yielding": 3.342991384182582, + "deflection": 0.0018479052914343662, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.164)" + }, + "parent_node_id": "node_2480", + "improvement_over_parent": null + }, + "node_2482": { + "node_id": "node_2482", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 180.22 kg\n Factor of Safety: 1.31\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.21999346440327, + "fos_buckling": 1.3132033474105054, + "fos_yielding": 3.353563574069226, + "deflection": 0.0017919895417895834, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002454)" + }, + "parent_node_id": "node_2481", + "improvement_over_parent": null + }, + "node_2483": { + "node_id": "node_2483", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.06 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.0645489356455, + "fos_buckling": 1.5668992862817235, + "fos_yielding": 4.1476494654003675, + "deflection": 0.0014517112566705978, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.261)" + }, + "parent_node_id": "node_2482", + "improvement_over_parent": null + }, + "node_2484": { + "node_id": "node_2484", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2483", + "improvement_over_parent": null + }, + "node_2485": { + "node_id": "node_2485", + "content": "INITIAL DESIGN (Trace 359)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 140.44 kg\n Factor of Safety: 0.06\n Max Deflection: 1.12e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.4436732626906, + "fos_buckling": 0.055544838325168495, + "fos_yielding": 1.334133083894096, + "deflection": 0.011208272117588108, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2486": { + "node_id": "node_2486", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 145.98 kg\n Factor of Safety: 0.06\n Max Deflection: 6.86e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.98483157153396, + "fos_buckling": 0.05547948654817119, + "fos_yielding": 1.3325633976655942, + "deflection": 0.006864900424502507, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002288)" + }, + "parent_node_id": "node_2485", + "improvement_over_parent": null + }, + "node_2487": { + "node_id": "node_2487", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 162.20 kg\n Factor of Safety: 0.06\n Max Deflection: 6.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.1969904150356, + "fos_buckling": 0.06043595117125375, + "fos_yielding": 1.477572473450256, + "deflection": 0.006188772831068214, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.121)" + }, + "parent_node_id": "node_2486", + "improvement_over_parent": null + }, + "node_2488": { + "node_id": "node_2488", + "content": "MODIFICATION: Increase 6 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 164.59 kg\n Factor of Safety: 0.06\n Max Deflection: 5.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.59269807935263, + "fos_buckling": 0.06042060155886204, + "fos_yielding": 1.4771971974049787, + "deflection": 0.005665796072107968, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.316)" + }, + "parent_node_id": "node_2487", + "improvement_over_parent": null + }, + "node_2489": { + "node_id": "node_2489", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 208.20 kg\n Factor of Safety: 0.84\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.20375232211333, + "fos_buckling": 0.8393122170070522, + "fos_yielding": 3.755086770520277, + "deflection": 0.001669558943906926, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2488", + "improvement_over_parent": null + }, + "node_2490": { + "node_id": "node_2490", + "content": "MODIFICATION: Increase 0 thickness by 67%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 214.99 kg\n Factor of Safety: 1.29\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.99165953606834, + "fos_buckling": 1.2868570048797376, + "fos_yielding": 3.7453837041957554, + "deflection": 0.001531563515663526, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.667)" + }, + "parent_node_id": "node_2489", + "improvement_over_parent": null + }, + "node_2491": { + "node_id": "node_2491", + "content": "MODIFICATION: Increase 1 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.85 kg\n Factor of Safety: 1.30\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.84614959181985, + "fos_buckling": 1.2957148388340178, + "fos_yielding": 3.771164336248136, + "deflection": 0.0014674114251689784, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.309)" + }, + "parent_node_id": "node_2490", + "improvement_over_parent": null + }, + "node_2492": { + "node_id": "node_2492", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2491", + "improvement_over_parent": null + }, + "node_2493": { + "node_id": "node_2493", + "content": "INITIAL DESIGN (Trace 360)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 196.68 kg\n Factor of Safety: 1.35\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.6826033903322, + "fos_buckling": 1.348928451461179, + "fos_yielding": 3.9428001194004754, + "deflection": 0.0015203100118812074, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2494": { + "node_id": "node_2494", + "content": "MODIFICATION: Increase 3 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 197.40 kg\n Factor of Safety: 1.35\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 197.39763184777948, + "fos_buckling": 1.3488457100611002, + "fos_yielding": 3.9425582735103126, + "deflection": 0.0015204254972635948, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.242)" + }, + "parent_node_id": "node_2493", + "improvement_over_parent": null + }, + "node_2495": { + "node_id": "node_2495", + "content": "MODIFICATION: Increase 5 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 203.44 kg\n Factor of Safety: 1.47\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.43802606571217, + "fos_buckling": 1.4734945855407928, + "fos_yielding": 4.19645566016795, + "deflection": 0.0015204254972635948, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.272)" + }, + "parent_node_id": "node_2494", + "improvement_over_parent": null + }, + "node_2496": { + "node_id": "node_2496", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 212.05 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.05113068047282, + "fos_buckling": 1.4816926677443631, + "fos_yielding": 4.1999251448446735, + "deflection": 0.0015203325127987623, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2495", + "improvement_over_parent": null + }, + "node_2497": { + "node_id": "node_2497", + "content": "MODIFICATION: Increase 3 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 213.35 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.34960398336727, + "fos_buckling": 1.4823318094679296, + "fos_yielding": 4.200635150889192, + "deflection": 0.0015205326963029335, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.368)" + }, + "parent_node_id": "node_2496", + "improvement_over_parent": null + }, + "node_2498": { + "node_id": "node_2498", + "content": "MODIFICATION: Increase 8 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0084)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 230.58 kg\n Factor of Safety: 1.54\n Max Deflection: 1.38e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 230.57579245745094, + "fos_buckling": 1.5377222335489986, + "fos_yielding": 4.181012347469707, + "deflection": 0.0013830292844068922, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.466)" + }, + "parent_node_id": "node_2497", + "improvement_over_parent": null + }, + "node_2499": { + "node_id": "node_2499", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0084)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 236.73 kg\n Factor of Safety: 1.50\n Max Deflection: 1.34e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 236.72960719574877, + "fos_buckling": 1.4980047682422053, + "fos_yielding": 4.14409545607967, + "deflection": 0.001340876682245844, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2498", + "improvement_over_parent": null + }, + "node_2500": { + "node_id": "node_2500", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2499", + "improvement_over_parent": null + }, + "node_2501": { + "node_id": "node_2501", + "content": "INITIAL DESIGN (Trace 361)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 179.55 kg\n Factor of Safety: 0.91\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.54965647452948, + "fos_buckling": 0.9064992147343643, + "fos_yielding": 3.6569618491292255, + "deflection": 0.0019827729329723372, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2502": { + "node_id": "node_2502", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 203.37 kg\n Factor of Safety: 1.02\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.36752328185418, + "fos_buckling": 1.015214959063274, + "fos_yielding": 4.137587847525217, + "deflection": 0.0017511803528390468, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.145)" + }, + "parent_node_id": "node_2501", + "improvement_over_parent": null + }, + "node_2503": { + "node_id": "node_2503", + "content": "MODIFICATION: Increase 9 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.07 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.07297426349533, + "fos_buckling": 1.323859151790269, + "fos_yielding": 4.137331119623245, + "deflection": 0.0014966996620650725, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.577)" + }, + "parent_node_id": "node_2502", + "improvement_over_parent": null + }, + "node_2504": { + "node_id": "node_2504", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.247317140224, + "fos_buckling": 1.5680006551691563, + "fos_yielding": 4.151070175161016, + "deflection": 0.0014505076336712138, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2503", + "improvement_over_parent": null + }, + "node_2505": { + "node_id": "node_2505", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2504", + "improvement_over_parent": null + }, + "node_2506": { + "node_id": "node_2506", + "content": "INITIAL DESIGN (Trace 362)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 171.77 kg\n Factor of Safety: 0.06\n Max Deflection: 6.16e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.77494970015115, + "fos_buckling": 0.06042510492151917, + "fos_yielding": 1.4773445342197125, + "deflection": 0.006163051120021188, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2507": { + "node_id": "node_2507", + "content": "MODIFICATION: Increase 1 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 174.48 kg\n Factor of Safety: 0.06\n Max Deflection: 6.11e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.4778361905546, + "fos_buckling": 0.06040779593523043, + "fos_yielding": 1.4769213436217024, + "deflection": 0.00611243926366298, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.200)" + }, + "parent_node_id": "node_2506", + "improvement_over_parent": null + }, + "node_2508": { + "node_id": "node_2508", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.09 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.0888904333153, + "fos_buckling": 1.324055375031209, + "fos_yielding": 4.137606920018234, + "deflection": 0.0014965815967865497, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2507", + "improvement_over_parent": null + }, + "node_2509": { + "node_id": "node_2509", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26323331004397, + "fos_buckling": 1.5680002301718, + "fos_yielding": 4.151347074028899, + "deflection": 0.0014503919219518305, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2508", + "improvement_over_parent": null + }, + "node_2510": { + "node_id": "node_2510", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2509", + "improvement_over_parent": null + }, + "node_2511": { + "node_id": "node_2511", + "content": "INITIAL DESIGN (Trace 363)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 214.50 kg\n Factor of Safety: 1.36\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.50313151687448, + "fos_buckling": 1.359193720692006, + "fos_yielding": 4.161510731646006, + "deflection": 0.001530053523098922, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2512": { + "node_id": "node_2512", + "content": "MODIFICATION: Increase 10 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.86 kg\n Factor of Safety: 1.33\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.86451812058326, + "fos_buckling": 1.3279479751045133, + "fos_yielding": 4.157871442985756, + "deflection": 0.001453115697535644, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.229)" + }, + "parent_node_id": "node_2511", + "improvement_over_parent": null + }, + "node_2513": { + "node_id": "node_2513", + "content": "MODIFICATION: Increase 2 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.55 kg\n Factor of Safety: 1.55\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.55241264527172, + "fos_buckling": 1.5454298386563456, + "fos_yielding": 4.154144929581041, + "deflection": 0.0014514877964892587, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.344)" + }, + "parent_node_id": "node_2512", + "improvement_over_parent": null + }, + "node_2514": { + "node_id": "node_2514", + "content": "MODIFICATION: Increase 2 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2727642135161, + "fos_buckling": 1.568374670082341, + "fos_yielding": 4.151335646029317, + "deflection": 0.0014503138788723511, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.279)" + }, + "parent_node_id": "node_2513", + "improvement_over_parent": null + }, + "node_2515": { + "node_id": "node_2515", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2514", + "improvement_over_parent": null + }, + "node_2516": { + "node_id": "node_2516", + "content": "INITIAL DESIGN (Trace 364)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 199.04 kg\n Factor of Safety: 0.94\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.04383165174679, + "fos_buckling": 0.9441842402136799, + "fos_yielding": 4.19645566016795, + "deflection": 0.0016802028141912546, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2517": { + "node_id": "node_2517", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 207.66 kg\n Factor of Safety: 0.97\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.65693626650744, + "fos_buckling": 0.9730505287666796, + "fos_yielding": 4.163381885728424, + "deflection": 0.0016675580343824235, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2516", + "improvement_over_parent": null + }, + "node_2518": { + "node_id": "node_2518", + "content": "MODIFICATION: Increase 1 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 214.01 kg\n Factor of Safety: 1.28\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.01483616732793, + "fos_buckling": 1.2780651075247966, + "fos_yielding": 4.156933259113794, + "deflection": 0.001552360157824978, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.623)" + }, + "parent_node_id": "node_2517", + "improvement_over_parent": null + }, + "node_2519": { + "node_id": "node_2519", + "content": "MODIFICATION: Increase 10 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n\nPerformance:\n Mass: 216.32 kg\n Factor of Safety: 1.28\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.32282247212746, + "fos_buckling": 1.2840468453359293, + "fos_yielding": 4.152411816708726, + "deflection": 0.0015507933491468694, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.304)" + }, + "parent_node_id": "node_2518", + "improvement_over_parent": null + }, + "node_2520": { + "node_id": "node_2520", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2519", + "improvement_over_parent": null + }, + "node_2521": { + "node_id": "node_2521", + "content": "INITIAL DESIGN (Trace 365)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 111.34 kg\n Factor of Safety: 0.09\n Max Deflection: 1.26e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.33777651648515, + "fos_buckling": 0.08801122974072188, + "fos_yielding": 1.617870701479864, + "deflection": 12593847068240.473, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2522": { + "node_id": "node_2522", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n\nPerformance:\n Mass: 140.22 kg\n Factor of Safety: 1.08\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.2207006248535, + "fos_buckling": 1.0766848629244559, + "fos_yielding": 2.7819001853719776, + "deflection": 0.0022202665996247945, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003702)" + }, + "parent_node_id": "node_2521", + "improvement_over_parent": null + }, + "node_2523": { + "node_id": "node_2523", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 145.92 kg\n Factor of Safety: 0.85\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.9246179604402, + "fos_buckling": 0.8507214804901535, + "fos_yielding": 2.760776326044088, + "deflection": 0.002202520277485398, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001645)" + }, + "parent_node_id": "node_2522", + "improvement_over_parent": null + }, + "node_2524": { + "node_id": "node_2524", + "content": "MODIFICATION: Increase 5 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 147.22 kg\n Factor of Safety: 1.10\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.21968453936762, + "fos_buckling": 1.0974041719126186, + "fos_yielding": 2.755275780009003, + "deflection": 0.0021851956873130273, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.639)" + }, + "parent_node_id": "node_2523", + "improvement_over_parent": null + }, + "node_2525": { + "node_id": "node_2525", + "content": "MODIFICATION: Increase 5 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 147.87 kg\n Factor of Safety: 1.11\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.87168518382745, + "fos_buckling": 1.1069443770017973, + "fos_yielding": 2.7534304261371414, + "deflection": 0.002179473297230917, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.202)" + }, + "parent_node_id": "node_2524", + "improvement_over_parent": null + }, + "node_2526": { + "node_id": "node_2526", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 174.35 kg\n Factor of Safety: 1.28\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.35194120023414, + "fos_buckling": 1.2767668746476952, + "fos_yielding": 3.2449650874118707, + "deflection": 0.0018515538471994954, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_2525", + "improvement_over_parent": null + }, + "node_2527": { + "node_id": "node_2527", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.11725096779645, + "fos_buckling": 1.5672420778707417, + "fos_yielding": 4.148943634748779, + "deflection": 0.0014513255552181204, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_2526", + "improvement_over_parent": null + }, + "node_2528": { + "node_id": "node_2528", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2527", + "improvement_over_parent": null + }, + "node_2529": { + "node_id": "node_2529", + "content": "INITIAL DESIGN (Trace 366)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 146.16 kg\n Factor of Safety: 0.11\n Max Deflection: 5.96e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.15643227151335, + "fos_buckling": 0.11069395603795532, + "fos_yielding": 1.8069689438815004, + "deflection": 0.005956779266067156, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2530": { + "node_id": "node_2530", + "content": "MODIFICATION: Increase all_members thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 174.31 kg\n Factor of Safety: 0.13\n Max Deflection: 5.00e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.30670179635246, + "fos_buckling": 0.1279803042494074, + "fos_yielding": 2.1498708426128292, + "deflection": 0.005001557344332229, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.211)" + }, + "parent_node_id": "node_2529", + "improvement_over_parent": null + }, + "node_2531": { + "node_id": "node_2531", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.96 kg\n Factor of Safety: 1.00\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.95867014772585, + "fos_buckling": 0.9985685956523715, + "fos_yielding": 4.119909457085975, + "deflection": 0.0015765735444878664, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_2530", + "improvement_over_parent": null + }, + "node_2532": { + "node_id": "node_2532", + "content": "MODIFICATION: Increase 0 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28574937632806, + "fos_buckling": 1.5681067027750926, + "fos_yielding": 4.151784436332407, + "deflection": 0.0014502238664558071, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.597)" + }, + "parent_node_id": "node_2531", + "improvement_over_parent": null + }, + "node_2533": { + "node_id": "node_2533", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2532", + "improvement_over_parent": null + }, + "node_2534": { + "node_id": "node_2534", + "content": "INITIAL DESIGN (Trace 367)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 201.00 kg\n Factor of Safety: 1.47\n Max Deflection: 2.40e+11 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.00194476047156, + "fos_buckling": 1.466912701158214, + "fos_yielding": 4.183390828453448, + "deflection": 240151933832.22247, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2535": { + "node_id": "node_2535", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 213.55 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.5503023805678, + "fos_buckling": 1.4757945493254867, + "fos_yielding": 4.1951076006080354, + "deflection": 0.001520039535952108, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2534", + "improvement_over_parent": null + }, + "node_2536": { + "node_id": "node_2536", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.70 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.70411711886564, + "fos_buckling": 1.5224256533958693, + "fos_yielding": 4.1951076006080354, + "deflection": 0.0014706246904364778, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2535", + "improvement_over_parent": null + }, + "node_2537": { + "node_id": "node_2537", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25852445456366, + "fos_buckling": 1.568011935702875, + "fos_yielding": 4.151342459868712, + "deflection": 0.0014504382664267612, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2536", + "improvement_over_parent": null + }, + "node_2538": { + "node_id": "node_2538", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2537", + "improvement_over_parent": null + }, + "node_2539": { + "node_id": "node_2539", + "content": "INITIAL DESIGN (Trace 368)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 163.57 kg\n Factor of Safety: 0.99\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.56889930733686, + "fos_buckling": 0.98892442537257, + "fos_yielding": 2.774413909675218, + "deflection": 0.0019155734605010386, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2540": { + "node_id": "node_2540", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 168.44 kg\n Factor of Safety: 0.84\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.44329592280437, + "fos_buckling": 0.8411591641016342, + "fos_yielding": 2.737405853010311, + "deflection": 0.0018662196489111535, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001992)" + }, + "parent_node_id": "node_2539", + "improvement_over_parent": null + }, + "node_2541": { + "node_id": "node_2541", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 212.94 kg\n Factor of Safety: 1.03\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.94360395938165, + "fos_buckling": 1.0348963196046415, + "fos_yielding": 3.475622778248093, + "deflection": 0.0014809330731727834, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.289)" + }, + "parent_node_id": "node_2540", + "improvement_over_parent": null + }, + "node_2542": { + "node_id": "node_2542", + "content": "MODIFICATION: Increase 2 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 213.57 kg\n Factor of Safety: 1.21\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.57432752754843, + "fos_buckling": 1.2077052412810605, + "fos_yielding": 3.4766223695414906, + "deflection": 0.0014787614328453233, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.362)" + }, + "parent_node_id": "node_2541", + "improvement_over_parent": null + }, + "node_2543": { + "node_id": "node_2543", + "content": "MODIFICATION: Increase 6 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0083)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 230.37 kg\n Factor of Safety: 1.21\n Max Deflection: 1.36e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 230.36799171921615, + "fos_buckling": 1.2055350386622345, + "fos_yielding": 3.470375004941959, + "deflection": 0.0013632692413190852, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.443)" + }, + "parent_node_id": "node_2542", + "improvement_over_parent": null + }, + "node_2544": { + "node_id": "node_2544", + "content": "MODIFICATION: Increase 2 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0083)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 231.44 kg\n Factor of Safety: 1.21\n Max Deflection: 1.36e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 231.43846875284248, + "fos_buckling": 1.2056892539867166, + "fos_yielding": 3.470818944761457, + "deflection": 0.0013625892505863435, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.473)" + }, + "parent_node_id": "node_2543", + "improvement_over_parent": null + }, + "node_2545": { + "node_id": "node_2545", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2544", + "improvement_over_parent": null + }, + "node_2546": { + "node_id": "node_2546", + "content": "INITIAL DESIGN (Trace 369)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 114.64 kg\n Factor of Safety: 0.87\n Max Deflection: 2.80e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.63881012452707, + "fos_buckling": 0.8692003634424132, + "fos_yielding": 2.2991692416113327, + "deflection": 0.0027950400931425765, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2547": { + "node_id": "node_2547", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n\nPerformance:\n Mass: 117.47 kg\n Factor of Safety: 0.91\n Max Deflection: 2.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.46961865790665, + "fos_buckling": 0.9084291057132347, + "fos_yielding": 2.2991692416113327, + "deflection": 0.0026685806086374064, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001246)" + }, + "parent_node_id": "node_2546", + "improvement_over_parent": null + }, + "node_2548": { + "node_id": "node_2548", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n\nPerformance:\n Mass: 151.81 kg\n Factor of Safety: 1.14\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.81315174283668, + "fos_buckling": 1.1396897741684089, + "fos_yielding": 2.970189720530604, + "deflection": 0.002069741472874608, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_2547", + "improvement_over_parent": null + }, + "node_2549": { + "node_id": "node_2549", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 157.90 kg\n Factor of Safety: 1.17\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.9014668282661, + "fos_buckling": 1.1722678912156514, + "fos_yielding": 2.9395868730646377, + "deflection": 0.0020423128680590067, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001763)" + }, + "parent_node_id": "node_2548", + "improvement_over_parent": null + }, + "node_2550": { + "node_id": "node_2550", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 180.66 kg\n Factor of Safety: 1.32\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.65761131932354, + "fos_buckling": 1.3159438611034937, + "fos_yielding": 3.3618602754895783, + "deflection": 0.0017876247547680964, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_2549", + "improvement_over_parent": null + }, + "node_2551": { + "node_id": "node_2551", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2720694958439, + "fos_buckling": 1.568113788630615, + "fos_yielding": 4.151709876950482, + "deflection": 0.0014503229390059322, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.259)" + }, + "parent_node_id": "node_2550", + "improvement_over_parent": null + }, + "node_2552": { + "node_id": "node_2552", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2551", + "improvement_over_parent": null + }, + "node_2553": { + "node_id": "node_2553", + "content": "INITIAL DESIGN (Trace 370)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.54 kg\n Factor of Safety: 1.36\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.54224835070906, + "fos_buckling": 1.3592226676552044, + "fos_yielding": 4.160169848270244, + "deflection": 0.0014675356703319094, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2554": { + "node_id": "node_2554", + "content": "MODIFICATION: Increase 9 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.41 kg\n Factor of Safety: 1.29\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.41005680080292, + "fos_buckling": 1.287759242930327, + "fos_yielding": 4.16177738049954, + "deflection": 0.001464507850842626, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.325)" + }, + "parent_node_id": "node_2553", + "improvement_over_parent": null + }, + "node_2555": { + "node_id": "node_2555", + "content": "MODIFICATION: Increase 5 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.93 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.93418166051487, + "fos_buckling": 1.5530534408856336, + "fos_yielding": 4.155219434362314, + "deflection": 0.001455582696012531, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.495)" + }, + "parent_node_id": "node_2554", + "improvement_over_parent": null + }, + "node_2556": { + "node_id": "node_2556", + "content": "MODIFICATION: Increase 5 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2612988152393, + "fos_buckling": 1.5680176712922658, + "fos_yielding": 4.151349876129665, + "deflection": 0.0014504402516584034, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.302)" + }, + "parent_node_id": "node_2555", + "improvement_over_parent": null + }, + "node_2557": { + "node_id": "node_2557", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2556", + "improvement_over_parent": null + }, + "node_2558": { + "node_id": "node_2558", + "content": "INITIAL DESIGN (Trace 371)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 150.35 kg\n Factor of Safety: 0.05\n Max Deflection: 1.14e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.35458488070938, + "fos_buckling": 0.05373200070009765, + "fos_yielding": 1.2828465264554985, + "deflection": 0.011365161491654568, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2559": { + "node_id": "node_2559", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 155.69 kg\n Factor of Safety: 0.05\n Max Deflection: 7.03e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.68785803559626, + "fos_buckling": 0.05367118941976405, + "fos_yielding": 1.281394662785268, + "deflection": 0.007032683211724452, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002195)" + }, + "parent_node_id": "node_2558", + "improvement_over_parent": null + }, + "node_2560": { + "node_id": "node_2560", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 179.78 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.77807854131453, + "fos_buckling": 0.060409094225628, + "fos_yielding": 1.4771412401243307, + "deflection": 0.006098565278782736, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.170)" + }, + "parent_node_id": "node_2559", + "improvement_over_parent": null + }, + "node_2561": { + "node_id": "node_2561", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 213.63 kg\n Factor of Safety: 1.04\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.63331705797765, + "fos_buckling": 1.036734297454856, + "fos_yielding": 4.125064740585201, + "deflection": 0.0015635572462472213, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004385)" + }, + "parent_node_id": "node_2560", + "improvement_over_parent": null + }, + "node_2562": { + "node_id": "node_2562", + "content": "MODIFICATION: Increase 7 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0041)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 217.13 kg\n Factor of Safety: 1.05\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.1263512706047, + "fos_buckling": 1.0509653198489648, + "fos_yielding": 4.126023831905884, + "deflection": 0.0015600371330617728, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.316)" + }, + "parent_node_id": "node_2561", + "improvement_over_parent": null + }, + "node_2563": { + "node_id": "node_2563", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2562", + "improvement_over_parent": null + }, + "node_2564": { + "node_id": "node_2564", + "content": "INITIAL DESIGN (Trace 372)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0025)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0005)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0009)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 93.63 kg\n Factor of Safety: 0.75\n Max Deflection: 3.34e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 93.627185218135, + "fos_buckling": 0.7507296896296287, + "fos_yielding": 1.8125749893265788, + "deflection": 0.0033392290376728783, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2565": { + "node_id": "node_2565", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0006)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0010)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 107.65 kg\n Factor of Safety: 0.85\n Max Deflection: 2.91e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.64576134601602, + "fos_buckling": 0.8531250278986382, + "fos_yielding": 2.083219476293209, + "deflection": 0.0029073002577238347, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_2564", + "improvement_over_parent": null + }, + "node_2566": { + "node_id": "node_2566", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 138.24 kg\n Factor of Safety: 1.07\n Max Deflection: 2.27e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.2422945756526, + "fos_buckling": 1.0676464562745651, + "fos_yielding": 2.673213703740769, + "deflection": 0.0022688444155052633, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.300)" + }, + "parent_node_id": "node_2565", + "improvement_over_parent": null + }, + "node_2567": { + "node_id": "node_2567", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 169.36 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.35909263888144, + "fos_buckling": 1.2732763430240581, + "fos_yielding": 3.2722191149237334, + "deflection": 0.0018561567950600886, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.241)" + }, + "parent_node_id": "node_2566", + "improvement_over_parent": null + }, + "node_2568": { + "node_id": "node_2568", + "content": "MODIFICATION: Increase 8 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 170.12 kg\n Factor of Safety: 1.27\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.11594800308208, + "fos_buckling": 1.272521908067995, + "fos_yielding": 3.2691584931264894, + "deflection": 0.0018539147156460274, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.224)" + }, + "parent_node_id": "node_2567", + "improvement_over_parent": null + }, + "node_2569": { + "node_id": "node_2569", + "content": "MODIFICATION: Increase 8 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 172.60 kg\n Factor of Safety: 1.27\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.5962871042905, + "fos_buckling": 1.2706558413696964, + "fos_yielding": 3.2616536958348763, + "deflection": 0.0018485980219722109, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.621)" + }, + "parent_node_id": "node_2568", + "improvement_over_parent": null + }, + "node_2570": { + "node_id": "node_2570", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.67 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.66928109928674, + "fos_buckling": 1.5523806530155424, + "fos_yielding": 4.146634716337848, + "deflection": 0.0014570991226741357, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.299)" + }, + "parent_node_id": "node_2569", + "improvement_over_parent": null + }, + "node_2571": { + "node_id": "node_2571", + "content": "MODIFICATION: Increase 9 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.08 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.0794375236824, + "fos_buckling": 1.567033463422674, + "fos_yielding": 4.148200779380386, + "deflection": 0.0014515407171193531, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.410)" + }, + "parent_node_id": "node_2570", + "improvement_over_parent": null + }, + "node_2572": { + "node_id": "node_2572", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2571", + "improvement_over_parent": null + }, + "node_2573": { + "node_id": "node_2573", + "content": "INITIAL DESIGN (Trace 373)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 130.19 kg\n Factor of Safety: 0.05\n Max Deflection: 8.40e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.19105280532398, + "fos_buckling": 0.04608694659834627, + "fos_yielding": 1.0734939414665043, + "deflection": 0.008398030172656295, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2574": { + "node_id": "node_2574", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n\nPerformance:\n Mass: 161.80 kg\n Factor of Safety: 1.20\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.79594622588326, + "fos_buckling": 1.1972667855600423, + "fos_yielding": 3.011755624088589, + "deflection": 0.001993676678744845, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004074)" + }, + "parent_node_id": "node_2573", + "improvement_over_parent": null + }, + "node_2575": { + "node_id": "node_2575", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 199.82 kg\n Factor of Safety: 1.43\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.81800124824238, + "fos_buckling": 1.4320008702420237, + "fos_yielding": 3.716993461278646, + "deflection": 0.0016181909845081862, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_2574", + "improvement_over_parent": null + }, + "node_2576": { + "node_id": "node_2576", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27507988970044, + "fos_buckling": 1.5680878538292653, + "fos_yielding": 4.151600981540412, + "deflection": 0.0014503263930468993, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.129)" + }, + "parent_node_id": "node_2575", + "improvement_over_parent": null + }, + "node_2577": { + "node_id": "node_2577", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2576", + "improvement_over_parent": null + }, + "node_2578": { + "node_id": "node_2578", + "content": "INITIAL DESIGN (Trace 374)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 120.43 kg\n Factor of Safety: 0.04\n Max Deflection: 8.72e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.43421668142338, + "fos_buckling": 0.03632026478238032, + "fos_yielding": 0.8219086919872904, + "deflection": 0.00872134057170467, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2579": { + "node_id": "node_2579", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 154.58 kg\n Factor of Safety: 0.60\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.577217716539, + "fos_buckling": 0.595111416499856, + "fos_yielding": 3.2273816260519568, + "deflection": 0.002254598108159686, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004425)" + }, + "parent_node_id": "node_2578", + "improvement_over_parent": null + }, + "node_2580": { + "node_id": "node_2580", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 164.40 kg\n Factor of Safety: 0.76\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.4032370859322, + "fos_buckling": 0.763926011258812, + "fos_yielding": 3.2401922546538473, + "deflection": 0.002153769675800683, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002374)" + }, + "parent_node_id": "node_2579", + "improvement_over_parent": null + }, + "node_2581": { + "node_id": "node_2581", + "content": "MODIFICATION: Increase 0 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 166.90 kg\n Factor of Safety: 1.01\n Max Deflection: 2.06e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.9011234134083, + "fos_buckling": 1.0141908750914972, + "fos_yielding": 3.2533448245574936, + "deflection": 0.002058638366064587, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.282)" + }, + "parent_node_id": "node_2580", + "improvement_over_parent": null + }, + "node_2582": { + "node_id": "node_2582", + "content": "MODIFICATION: Increase 1 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 171.81 kg\n Factor of Safety: 0.94\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.813802058468, + "fos_buckling": 0.9398486034122867, + "fos_yielding": 3.248701320997312, + "deflection": 0.0019052093131464716, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.597)" + }, + "parent_node_id": "node_2581", + "improvement_over_parent": null + }, + "node_2583": { + "node_id": "node_2583", + "content": "MODIFICATION: Increase 0 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 173.98 kg\n Factor of Safety: 1.19\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.98483046610147, + "fos_buckling": 1.1892393757849258, + "fos_yielding": 3.2564888829080414, + "deflection": 0.0018493023354642796, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.196)" + }, + "parent_node_id": "node_2582", + "improvement_over_parent": null + }, + "node_2584": { + "node_id": "node_2584", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 222.19 kg\n Factor of Safety: 1.45\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.18603857511673, + "fos_buckling": 1.453079497869197, + "fos_yielding": 4.154813240163952, + "deflection": 0.0014526150755111173, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.304)" + }, + "parent_node_id": "node_2583", + "improvement_over_parent": null + }, + "node_2585": { + "node_id": "node_2585", + "content": "MODIFICATION: Increase 2 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20865056326988, + "fos_buckling": 1.5678299749341649, + "fos_yielding": 4.150530571362376, + "deflection": 0.001450805163556241, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.443)" + }, + "parent_node_id": "node_2584", + "improvement_over_parent": null + }, + "node_2586": { + "node_id": "node_2586", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2585", + "improvement_over_parent": null + }, + "node_2587": { + "node_id": "node_2587", + "content": "INITIAL DESIGN (Trace 375)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 120.71 kg\n Factor of Safety: 0.05\n Max Deflection: 8.33e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.70889066275937, + "fos_buckling": 0.04732557645550777, + "fos_yielding": 1.1064756092566015, + "deflection": 0.00832904193512089, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2588": { + "node_id": "node_2588", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n\nPerformance:\n Mass: 153.26 kg\n Factor of Safety: 1.07\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.25724316748205, + "fos_buckling": 1.0666001682826063, + "fos_yielding": 2.630533403433807, + "deflection": 0.0020135701273494323, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004204)" + }, + "parent_node_id": "node_2587", + "improvement_over_parent": null + }, + "node_2589": { + "node_id": "node_2589", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 171.34 kg\n Factor of Safety: 1.18\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.33836145578812, + "fos_buckling": 1.1782245899511548, + "fos_yielding": 2.9433500426587047, + "deflection": 0.0018036065115255876, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_2588", + "improvement_over_parent": null + }, + "node_2590": { + "node_id": "node_2590", + "content": "MODIFICATION: Increase 4 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 175.77 kg\n Factor of Safety: 1.17\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.77319816329603, + "fos_buckling": 1.1677013865715073, + "fos_yielding": 3.4522817564357937, + "deflection": 0.001788666259818784, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.193)" + }, + "parent_node_id": "node_2589", + "improvement_over_parent": null + }, + "node_2591": { + "node_id": "node_2591", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 186.24 kg\n Factor of Safety: 1.35\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.23993031529906, + "fos_buckling": 1.3503798279309185, + "fos_yielding": 3.463200985603477, + "deflection": 0.001734525710246229, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002541)" + }, + "parent_node_id": "node_2590", + "improvement_over_parent": null + }, + "node_2592": { + "node_id": "node_2592", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20931652580455, + "fos_buckling": 1.5679248291015628, + "fos_yielding": 4.147969299471289, + "deflection": 0.0014506200988873535, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_2591", + "improvement_over_parent": null + }, + "node_2593": { + "node_id": "node_2593", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2592", + "improvement_over_parent": null + }, + "node_2594": { + "node_id": "node_2594", + "content": "INITIAL DESIGN (Trace 376)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 175.25 kg\n Factor of Safety: 1.01\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.2507234191978, + "fos_buckling": 1.0076317768259861, + "fos_yielding": 3.4599041201377054, + "deflection": 0.001790086801604401, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2595": { + "node_id": "node_2595", + "content": "MODIFICATION: Increase 2 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 175.90 kg\n Factor of Safety: 1.17\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.895012553495, + "fos_buckling": 1.1662852151579068, + "fos_yielding": 3.456796479990424, + "deflection": 0.0017875937189121866, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.299)" + }, + "parent_node_id": "node_2594", + "improvement_over_parent": null + }, + "node_2596": { + "node_id": "node_2596", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.81 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.80813175083097, + "fos_buckling": 1.339520071925006, + "fos_yielding": 4.1401787634240215, + "deflection": 0.0014951463626714384, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_2595", + "improvement_over_parent": null + }, + "node_2597": { + "node_id": "node_2597", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 221.22 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.21758619882883, + "fos_buckling": 1.5600091134708676, + "fos_yielding": 4.152377479767428, + "deflection": 0.0014530008131390555, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002526)" + }, + "parent_node_id": "node_2596", + "improvement_over_parent": null + }, + "node_2598": { + "node_id": "node_2598", + "content": "MODIFICATION: Increase 9 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0070)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 229.75 kg\n Factor of Safety: 1.58\n Max Deflection: 1.39e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 229.74860011257928, + "fos_buckling": 1.5774050343684167, + "fos_yielding": 4.14903989001044, + "deflection": 0.0013876725941949196, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.225)" + }, + "parent_node_id": "node_2597", + "improvement_over_parent": null + }, + "node_2599": { + "node_id": "node_2599", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2598", + "improvement_over_parent": null + }, + "node_2600": { + "node_id": "node_2600", + "content": "INITIAL DESIGN (Trace 377)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 210.82 kg\n Factor of Safety: 1.40\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.82076870983596, + "fos_buckling": 1.4016574857192527, + "fos_yielding": 4.195107600608034, + "deflection": 0.0015379565001638791, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2601": { + "node_id": "node_2601", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.38 kg\n Factor of Safety: 1.39\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.37517604553398, + "fos_buckling": 1.392427741405072, + "fos_yielding": 4.153230745592912, + "deflection": 0.0015186334890637282, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2600", + "improvement_over_parent": null + }, + "node_2602": { + "node_id": "node_2602", + "content": "MODIFICATION: Increase 10 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0023)]\n\nPerformance:\n Mass: 214.96 kg\n Factor of Safety: 1.39\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.95569186015362, + "fos_buckling": 1.3920233911979911, + "fos_yielding": 4.151553495175348, + "deflection": 0.001517974918499666, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.183)" + }, + "parent_node_id": "node_2601", + "improvement_over_parent": null + }, + "node_2603": { + "node_id": "node_2603", + "content": "MODIFICATION: Increase 9 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0063)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0023)]\n\nPerformance:\n Mass: 225.29 kg\n Factor of Safety: 1.58\n Max Deflection: 1.42e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 225.29084411176657, + "fos_buckling": 1.576577669174944, + "fos_yielding": 4.146512484845426, + "deflection": 0.0014185951029607442, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.314)" + }, + "parent_node_id": "node_2602", + "improvement_over_parent": null + }, + "node_2604": { + "node_id": "node_2604", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2603", + "improvement_over_parent": null + }, + "node_2605": { + "node_id": "node_2605", + "content": "INITIAL DESIGN (Trace 378)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 171.82 kg\n Factor of Safety: 0.96\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.821985729409, + "fos_buckling": 0.9594531541335617, + "fos_yielding": 3.436905359085162, + "deflection": 0.0018481897071691814, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2606": { + "node_id": "node_2606", + "content": "MODIFICATION: Increase 0 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 174.35 kg\n Factor of Safety: 1.16\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.35225642274452, + "fos_buckling": 1.163870581481729, + "fos_yielding": 3.4465448243647057, + "deflection": 0.001792730655832958, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.220)" + }, + "parent_node_id": "node_2605", + "improvement_over_parent": null + }, + "node_2607": { + "node_id": "node_2607", + "content": "MODIFICATION: Increase 3 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 175.37 kg\n Factor of Safety: 1.16\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.36883583235732, + "fos_buckling": 1.1634911384368485, + "fos_yielding": 3.446530027939261, + "deflection": 0.0017929147951553643, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.333)" + }, + "parent_node_id": "node_2606", + "improvement_over_parent": null + }, + "node_2608": { + "node_id": "node_2608", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 185.81 kg\n Factor of Safety: 1.35\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.81266332942914, + "fos_buckling": 1.3476069884868216, + "fos_yielding": 3.457428946137482, + "deflection": 0.001738655652372088, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002535)" + }, + "parent_node_id": "node_2607", + "improvement_over_parent": null + }, + "node_2609": { + "node_id": "node_2609", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20557485291425, + "fos_buckling": 1.5677261150593202, + "fos_yielding": 4.150427507912925, + "deflection": 0.001450797906822298, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.221)" + }, + "parent_node_id": "node_2608", + "improvement_over_parent": null + }, + "node_2610": { + "node_id": "node_2610", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2609", + "improvement_over_parent": null + }, + "node_2611": { + "node_id": "node_2611", + "content": "INITIAL DESIGN (Trace 379)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 143.54 kg\n Factor of Safety: 0.96\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.54462755995104, + "fos_buckling": 0.9596946967040877, + "fos_yielding": 2.8584618094805294, + "deflection": 0.0023437178586068965, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2612": { + "node_id": "node_2612", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 147.74 kg\n Factor of Safety: 0.91\n Max Deflection: 2.22e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.7373728961325, + "fos_buckling": 0.9128874063360282, + "fos_yielding": 2.8198771248429173, + "deflection": 0.0022203010716891646, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001696)" + }, + "parent_node_id": "node_2611", + "improvement_over_parent": null + }, + "node_2613": { + "node_id": "node_2613", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 170.91 kg\n Factor of Safety: 1.03\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.9145394463607, + "fos_buckling": 1.0317245089352276, + "fos_yielding": 3.2601185339531407, + "deflection": 0.0019215706899266838, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_2612", + "improvement_over_parent": null + }, + "node_2614": { + "node_id": "node_2614", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 216.97 kg\n Factor of Safety: 1.25\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.97131263374072, + "fos_buckling": 1.249660636011302, + "fos_yielding": 4.1331144358665455, + "deflection": 0.0015173299876615842, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_2613", + "improvement_over_parent": null + }, + "node_2615": { + "node_id": "node_2615", + "content": "MODIFICATION: Increase 7 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0030)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 218.38 kg\n Factor of Safety: 1.17\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.37757251661404, + "fos_buckling": 1.1716715623050844, + "fos_yielding": 4.128828748141686, + "deflection": 0.001515313237297829, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.183)" + }, + "parent_node_id": "node_2614", + "improvement_over_parent": null + }, + "node_2616": { + "node_id": "node_2616", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2615", + "improvement_over_parent": null + }, + "node_2617": { + "node_id": "node_2617", + "content": "INITIAL DESIGN (Trace 380)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 158.61 kg\n Factor of Safety: 1.04\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.6085132552312, + "fos_buckling": 1.0383162283352219, + "fos_yielding": 3.250543408147414, + "deflection": 0.0021548663896417486, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2618": { + "node_id": "node_2618", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.99 kg\n Factor of Safety: 1.28\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.9867922367666, + "fos_buckling": 1.2804131851311942, + "fos_yielding": 4.19267420117956, + "deflection": 0.0016698903854153121, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_2617", + "improvement_over_parent": null + }, + "node_2619": { + "node_id": "node_2619", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 208.54 kg\n Factor of Safety: 1.29\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.54119957246462, + "fos_buckling": 1.2872411419960215, + "fos_yielding": 4.133621243154442, + "deflection": 0.0016384194054847858, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2618", + "improvement_over_parent": null + }, + "node_2620": { + "node_id": "node_2620", + "content": "MODIFICATION: Increase 1 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.24 kg\n Factor of Safety: 1.18\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.23550833045746, + "fos_buckling": 1.1762654006607984, + "fos_yielding": 4.128222179723, + "deflection": 0.001531863637622194, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.527)" + }, + "parent_node_id": "node_2619", + "improvement_over_parent": null + }, + "node_2621": { + "node_id": "node_2621", + "content": "MODIFICATION: Increase 7 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0031)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 215.90 kg\n Factor of Safety: 1.09\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.8968523427909, + "fos_buckling": 1.0920627071251239, + "fos_yielding": 4.1229775569829155, + "deflection": 0.001529288208829379, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.217)" + }, + "parent_node_id": "node_2620", + "improvement_over_parent": null + }, + "node_2622": { + "node_id": "node_2622", + "content": "MODIFICATION: Increase 9 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0031)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0067)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 222.67 kg\n Factor of Safety: 1.05\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.67220218140469, + "fos_buckling": 1.0465054789261043, + "fos_yielding": 4.120054454761646, + "deflection": 0.0014753572589951286, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.178)" + }, + "parent_node_id": "node_2621", + "improvement_over_parent": null + }, + "node_2623": { + "node_id": "node_2623", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2622", + "improvement_over_parent": null + }, + "node_2624": { + "node_id": "node_2624", + "content": "INITIAL DESIGN (Trace 381)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 106.64 kg\n Factor of Safety: 0.83\n Max Deflection: 3.01e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.64306125828855, + "fos_buckling": 0.8254551587528501, + "fos_yielding": 1.9870917738292013, + "deflection": 0.0030142301106918716, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2625": { + "node_id": "node_2625", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 132.49 kg\n Factor of Safety: 1.00\n Max Deflection: 2.43e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 132.49163167219803, + "fos_buckling": 1.004355404712712, + "fos_yielding": 2.467589877341337, + "deflection": 0.002430142046873892, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_2624", + "improvement_over_parent": null + }, + "node_2626": { + "node_id": "node_2626", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 157.77 kg\n Factor of Safety: 1.17\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.7703960077572, + "fos_buckling": 1.1713980425729906, + "fos_yielding": 2.937066449070537, + "deflection": 0.002044037664345174, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.203)" + }, + "parent_node_id": "node_2625", + "improvement_over_parent": null + }, + "node_2627": { + "node_id": "node_2627", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 181.38 kg\n Factor of Safety: 1.32\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.38021519184016, + "fos_buckling": 1.3203770527992391, + "fos_yielding": 3.375164411533405, + "deflection": 0.001780622916130959, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.161)" + }, + "parent_node_id": "node_2626", + "improvement_over_parent": null + }, + "node_2628": { + "node_id": "node_2628", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.50 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.49848044945134, + "fos_buckling": 1.5693664440325132, + "fos_yielding": 4.155783420136484, + "deflection": 0.0014489050659710994, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_2627", + "improvement_over_parent": null + }, + "node_2629": { + "node_id": "node_2629", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2628", + "improvement_over_parent": null + }, + "node_2630": { + "node_id": "node_2630", + "content": "INITIAL DESIGN (Trace 382)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 183.36 kg\n Factor of Safety: 1.33\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.3587371069795, + "fos_buckling": 1.3251076802270958, + "fos_yielding": 3.718041340201308, + "deflection": 0.0017082282819497788, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2631": { + "node_id": "node_2631", + "content": "MODIFICATION: Increase 2 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 184.49 kg\n Factor of Safety: 1.32\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.48937778433776, + "fos_buckling": 1.3249490851832504, + "fos_yielding": 3.717775093452248, + "deflection": 0.0017084337549324086, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.603)" + }, + "parent_node_id": "node_2630", + "improvement_over_parent": null + }, + "node_2632": { + "node_id": "node_2632", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 189.09 kg\n Factor of Safety: 1.34\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.08866542945063, + "fos_buckling": 1.344941629760248, + "fos_yielding": 3.7349282745366787, + "deflection": 0.001708976909789603, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002089)" + }, + "parent_node_id": "node_2631", + "improvement_over_parent": null + }, + "node_2633": { + "node_id": "node_2633", + "content": "MODIFICATION: Increase 8 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0079)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 208.17 kg\n Factor of Safety: 1.40\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.1704512104273, + "fos_buckling": 1.398943319965715, + "fos_yielding": 3.7149778225596544, + "deflection": 0.0015284212025127512, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.575)" + }, + "parent_node_id": "node_2632", + "improvement_over_parent": null + }, + "node_2634": { + "node_id": "node_2634", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0079)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 213.64 kg\n Factor of Safety: 1.34\n Max Deflection: 1.48e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.638012061468, + "fos_buckling": 1.3423135750896507, + "fos_yielding": 3.6836850290682803, + "deflection": 0.0014846498436399823, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002255)" + }, + "parent_node_id": "node_2633", + "improvement_over_parent": null + }, + "node_2635": { + "node_id": "node_2635", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0090)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 240.04 kg\n Factor of Safety: 1.47\n Max Deflection: 1.32e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 240.04275995520368, + "fos_buckling": 1.469197808320476, + "fos_yielding": 4.144530706917935, + "deflection": 0.0013233439249177095, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.138)" + }, + "parent_node_id": "node_2634", + "improvement_over_parent": null + }, + "node_2636": { + "node_id": "node_2636", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2635", + "improvement_over_parent": null + }, + "node_2637": { + "node_id": "node_2637", + "content": "INITIAL DESIGN (Trace 383)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 91.65 kg\n Factor of Safety: 0.03\n Max Deflection: 1.15e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 91.64745297750612, + "fos_buckling": 0.034851998494485475, + "fos_yielding": 0.7853509513707678, + "deflection": 0.011487718009920721, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2638": { + "node_id": "node_2638", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0018)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 106.79 kg\n Factor of Safety: 0.04\n Max Deflection: 9.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.79300097270371, + "fos_buckling": 0.03997171683050686, + "fos_yielding": 0.9139690080055234, + "deflection": 0.009868974587710432, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.174)" + }, + "parent_node_id": "node_2637", + "improvement_over_parent": null + }, + "node_2639": { + "node_id": "node_2639", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 136.62 kg\n Factor of Safety: 0.05\n Max Deflection: 7.73e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.6247299685044, + "fos_buckling": 0.049531114452046845, + "fos_yielding": 1.1663198585572168, + "deflection": 0.007730381312598775, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.299)" + }, + "parent_node_id": "node_2638", + "improvement_over_parent": null + }, + "node_2640": { + "node_id": "node_2640", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 155.42 kg\n Factor of Safety: 0.06\n Max Deflection: 6.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.42033999510957, + "fos_buckling": 0.05519854359624241, + "fos_yielding": 1.3246376702482738, + "deflection": 0.006804640473470457, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.149)" + }, + "parent_node_id": "node_2639", + "improvement_over_parent": null + }, + "node_2641": { + "node_id": "node_2641", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 173.72 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.7158756730037, + "fos_buckling": 0.0604527576572781, + "fos_yielding": 1.4782347897822186, + "deflection": 0.006096011824330427, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.129)" + }, + "parent_node_id": "node_2640", + "improvement_over_parent": null + }, + "node_2642": { + "node_id": "node_2642", + "content": "MODIFICATION: Increase 3 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 174.67 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.6666501217978, + "fos_buckling": 0.06044666630754689, + "fos_yielding": 1.4780858396691328, + "deflection": 0.006095989205198059, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.247)" + }, + "parent_node_id": "node_2641", + "improvement_over_parent": null + }, + "node_2643": { + "node_id": "node_2643", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.28 kg\n Factor of Safety: 1.12\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.2777043645585, + "fos_buckling": 1.124007443199638, + "fos_yielding": 4.130964579818665, + "deflection": 0.0015429585939453752, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2642", + "improvement_over_parent": null + }, + "node_2644": { + "node_id": "node_2644", + "content": "MODIFICATION: Increase 0 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4095153871551, + "fos_buckling": 1.5690097515694814, + "fos_yielding": 4.154601356731218, + "deflection": 0.0014495344897458111, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.439)" + }, + "parent_node_id": "node_2643", + "improvement_over_parent": null + }, + "node_2645": { + "node_id": "node_2645", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2644", + "improvement_over_parent": null + }, + "node_2646": { + "node_id": "node_2646", + "content": "INITIAL DESIGN (Trace 384)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 203.48 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.47688928182694, + "fos_buckling": 1.459690049029143, + "fos_yielding": 4.182735151037983, + "deflection": 0.0015206199543539437, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2647": { + "node_id": "node_2647", + "content": "MODIFICATION: Increase 2 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.56 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.55767213324913, + "fos_buckling": 1.45952327607232, + "fos_yielding": 4.182448887915437, + "deflection": 0.0015207945133097083, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.479)" + }, + "parent_node_id": "node_2646", + "improvement_over_parent": null + }, + "node_2648": { + "node_id": "node_2648", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.71 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.71148687154695, + "fos_buckling": 1.339376272245978, + "fos_yielding": 4.13823562556719, + "deflection": 0.0014958344555459724, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2647", + "improvement_over_parent": null + }, + "node_2649": { + "node_id": "node_2649", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2598444916432, + "fos_buckling": 1.5680106427621698, + "fos_yielding": 4.151338035190035, + "deflection": 0.0014504364670497275, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2648", + "improvement_over_parent": null + }, + "node_2650": { + "node_id": "node_2650", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2649", + "improvement_over_parent": null + }, + "node_2651": { + "node_id": "node_2651", + "content": "INITIAL DESIGN (Trace 385)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2652": { + "node_id": "node_2652", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 121.87 kg\n Factor of Safety: 0.74\n Max Deflection: 2.70e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.86893581184705, + "fos_buckling": 0.736186042669894, + "fos_yielding": 2.5970501487136657, + "deflection": 0.0026961643817485273, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001175)" + }, + "parent_node_id": "node_2651", + "improvement_over_parent": null + }, + "node_2653": { + "node_id": "node_2653", + "content": "MODIFICATION: Increase 3 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 129.23 kg\n Factor of Safety: 0.74\n Max Deflection: 2.70e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.23126825178218, + "fos_buckling": 0.736186042669894, + "fos_yielding": 2.951780355696485, + "deflection": 0.0026961643817485273, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.366)" + }, + "parent_node_id": "node_2652", + "improvement_over_parent": null + }, + "node_2654": { + "node_id": "node_2654", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0065)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 165.32 kg\n Factor of Safety: 0.92\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.32459443099125, + "fos_buckling": 0.9199326914003648, + "fos_yielding": 3.773724744719909, + "deflection": 0.002107333864596505, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.300)" + }, + "parent_node_id": "node_2653", + "improvement_over_parent": null + }, + "node_2655": { + "node_id": "node_2655", + "content": "MODIFICATION: Increase 7 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0065)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 168.05 kg\n Factor of Safety: 0.85\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.05321602406244, + "fos_buckling": 0.8511146102730189, + "fos_yielding": 3.7623621034468537, + "deflection": 0.002100265754926282, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.302)" + }, + "parent_node_id": "node_2654", + "improvement_over_parent": null + }, + "node_2656": { + "node_id": "node_2656", + "content": "MODIFICATION: Increase 9 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0065)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n\nPerformance:\n Mass: 168.54 kg\n Factor of Safety: 0.85\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.54129670219845, + "fos_buckling": 0.8510266140515212, + "fos_yielding": 3.7623476213781593, + "deflection": 0.002100369112014459, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.189)" + }, + "parent_node_id": "node_2655", + "improvement_over_parent": null + }, + "node_2657": { + "node_id": "node_2657", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0065)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 175.36 kg\n Factor of Safety: 0.70\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.3597683569399, + "fos_buckling": 0.7042338344465168, + "fos_yielding": 3.784980711794589, + "deflection": 0.0020279734611366525, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001990)" + }, + "parent_node_id": "node_2656", + "improvement_over_parent": null + }, + "node_2658": { + "node_id": "node_2658", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0084)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0040)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0023)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 221.34 kg\n Factor of Safety: 0.85\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.33576705601115, + "fos_buckling": 0.8517787600277102, + "fos_yielding": 4.775886857592002, + "deflection": 0.0016062431802228326, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.289)" + }, + "parent_node_id": "node_2657", + "improvement_over_parent": null + }, + "node_2659": { + "node_id": "node_2659", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2658", + "improvement_over_parent": null + }, + "node_2660": { + "node_id": "node_2660", + "content": "INITIAL DESIGN (Trace 386)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n\nPerformance:\n Mass: 102.48 kg\n Factor of Safety: 0.07\n Max Deflection: 3.41e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 102.4791675361294, + "fos_buckling": 0.0690154016146411, + "fos_yielding": 1.08126794842885, + "deflection": 34097986448446.492, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2661": { + "node_id": "node_2661", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n\nPerformance:\n Mass: 105.60 kg\n Factor of Safety: 0.08\n Max Deflection: 8.32e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 105.5974746701928, + "fos_buckling": 0.08267500183889849, + "fos_yielding": 1.2619960262117502, + "deflection": 0.008319174989475089, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001242)" + }, + "parent_node_id": "node_2660", + "improvement_over_parent": null + }, + "node_2662": { + "node_id": "node_2662", + "content": "MODIFICATION: Increase 4 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n\nPerformance:\n Mass: 108.91 kg\n Factor of Safety: 0.08\n Max Deflection: 8.16e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.90734975196509, + "fos_buckling": 0.08267500183889848, + "fos_yielding": 1.2619960262117502, + "deflection": 0.008162724028971615, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.193)" + }, + "parent_node_id": "node_2661", + "improvement_over_parent": null + }, + "node_2663": { + "node_id": "node_2663", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n\nPerformance:\n Mass: 111.04 kg\n Factor of Safety: 0.08\n Max Deflection: 8.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.0386731016686, + "fos_buckling": 0.0826562406628091, + "fos_yielding": 1.2949796954794068, + "deflection": 0.00809999421514649, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001137)" + }, + "parent_node_id": "node_2662", + "improvement_over_parent": null + }, + "node_2664": { + "node_id": "node_2664", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 129.89 kg\n Factor of Safety: 0.09\n Max Deflection: 6.93e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.8947028608639, + "fos_buckling": 0.0949403276798353, + "fos_yielding": 1.5134116660823451, + "deflection": 0.0069281898134677, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_2663", + "improvement_over_parent": null + }, + "node_2665": { + "node_id": "node_2665", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0060)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 164.42 kg\n Factor of Safety: 0.12\n Max Deflection: 5.48e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.41547982638204, + "fos_buckling": 0.11612216710320843, + "fos_yielding": 1.912269811653702, + "deflection": 0.005479165517813711, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.289)" + }, + "parent_node_id": "node_2664", + "improvement_over_parent": null + }, + "node_2666": { + "node_id": "node_2666", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0060)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 202.32 kg\n Factor of Safety: 1.27\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.32362250754502, + "fos_buckling": 1.2749984399508176, + "fos_yielding": 3.6963751762784414, + "deflection": 0.0016224665757486262, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005018)" + }, + "parent_node_id": "node_2665", + "improvement_over_parent": null + }, + "node_2667": { + "node_id": "node_2667", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0068)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 227.66 kg\n Factor of Safety: 1.42\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 227.6591479688224, + "fos_buckling": 1.4230869655691591, + "fos_yielding": 4.1586471005292065, + "deflection": 0.0014437479559948096, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.138)" + }, + "parent_node_id": "node_2666", + "improvement_over_parent": null + }, + "node_2668": { + "node_id": "node_2668", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2667", + "improvement_over_parent": null + }, + "node_2669": { + "node_id": "node_2669", + "content": "INITIAL DESIGN (Trace 387)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 121.00 kg\n Factor of Safety: 0.05\n Max Deflection: 8.04e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.99791641563573, + "fos_buckling": 0.048510191136406054, + "fos_yielding": 1.1384938343282451, + "deflection": 0.008039250403598814, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2670": { + "node_id": "node_2670", + "content": "MODIFICATION: Increase 5 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 125.57 kg\n Factor of Safety: 0.05\n Max Deflection: 8.04e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.57062899035131, + "fos_buckling": 0.04851019113640606, + "fos_yielding": 1.1384938343282451, + "deflection": 0.008039250403598812, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.362)" + }, + "parent_node_id": "node_2669", + "improvement_over_parent": null + }, + "node_2671": { + "node_id": "node_2671", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 138.88 kg\n Factor of Safety: 0.05\n Max Deflection: 7.28e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.88169096653132, + "fos_buckling": 0.05282529656836447, + "fos_yielding": 1.257413961984281, + "deflection": 0.007276664935244528, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.114)" + }, + "parent_node_id": "node_2670", + "improvement_over_parent": null + }, + "node_2672": { + "node_id": "node_2672", + "content": "MODIFICATION: Increase 1 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 142.14 kg\n Factor of Safety: 0.05\n Max Deflection: 7.18e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.13983331847572, + "fos_buckling": 0.05280702243429824, + "fos_yielding": 1.256978978125964, + "deflection": 0.007184877183062265, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.302)" + }, + "parent_node_id": "node_2671", + "improvement_over_parent": null + }, + "node_2673": { + "node_id": "node_2673", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 146.54 kg\n Factor of Safety: 0.05\n Max Deflection: 7.17e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.5355284049375, + "fos_buckling": 0.05278238806757285, + "fos_yielding": 1.2563926000329408, + "deflection": 0.007169580790273355, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001989)" + }, + "parent_node_id": "node_2672", + "improvement_over_parent": null + }, + "node_2674": { + "node_id": "node_2674", + "content": "MODIFICATION: Increase 6 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0029)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 148.72 kg\n Factor of Safety: 0.05\n Max Deflection: 6.52e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.72199050897137, + "fos_buckling": 0.052770143247991744, + "fos_yielding": 1.2561011334799166, + "deflection": 0.006519230570619989, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.332)" + }, + "parent_node_id": "node_2673", + "improvement_over_parent": null + }, + "node_2675": { + "node_id": "node_2675", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0029)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n\nPerformance:\n Mass: 185.76 kg\n Factor of Safety: 1.11\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.76423081282536, + "fos_buckling": 1.109772573731974, + "fos_yielding": 3.1605058262410126, + "deflection": 0.0017251658311266064, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004831)" + }, + "parent_node_id": "node_2674", + "improvement_over_parent": null + }, + "node_2676": { + "node_id": "node_2676", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 218.77 kg\n Factor of Safety: 1.28\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.77218958835581, + "fos_buckling": 1.2842500042247889, + "fos_yielding": 3.7323045919099314, + "deflection": 0.0014678785650014375, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.195)" + }, + "parent_node_id": "node_2675", + "improvement_over_parent": null + }, + "node_2677": { + "node_id": "node_2677", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2676", + "improvement_over_parent": null + }, + "node_2678": { + "node_id": "node_2678", + "content": "INITIAL DESIGN (Trace 388)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 145.27 kg\n Factor of Safety: 0.04\n Max Deflection: 8.10e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.2684754618155, + "fos_buckling": 0.038964328083295814, + "fos_yielding": 0.8886319777560922, + "deflection": 0.008102325339798988, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2679": { + "node_id": "node_2679", + "content": "MODIFICATION: Increase 2 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 146.02 kg\n Factor of Safety: 0.05\n Max Deflection: 7.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.02108751569853, + "fos_buckling": 0.0508198323188958, + "fos_yielding": 1.2018099517417606, + "deflection": 0.007495430157606242, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.379)" + }, + "parent_node_id": "node_2678", + "improvement_over_parent": null + }, + "node_2680": { + "node_id": "node_2680", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n\nPerformance:\n Mass: 181.47 kg\n Factor of Safety: 1.32\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.46859943182358, + "fos_buckling": 1.3209279581139124, + "fos_yielding": 3.3768234684082103, + "deflection": 0.0017797425978860208, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004607)" + }, + "parent_node_id": "node_2679", + "improvement_over_parent": null + }, + "node_2681": { + "node_id": "node_2681", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2811045838835, + "fos_buckling": 1.5681432383382525, + "fos_yielding": 4.151781905211348, + "deflection": 0.0014502775826949947, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.253)" + }, + "parent_node_id": "node_2680", + "improvement_over_parent": null + }, + "node_2682": { + "node_id": "node_2682", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2681", + "improvement_over_parent": null + }, + "node_2683": { + "node_id": "node_2683", + "content": "INITIAL DESIGN (Trace 389)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 125.56 kg\n Factor of Safety: 0.19\n Max Deflection: 8.68e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.55865650958236, + "fos_buckling": 0.19042525217658973, + "fos_yielding": 3.2477037305141283, + "deflection": 8683664129045.056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2684": { + "node_id": "node_2684", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 161.93 kg\n Factor of Safety: 0.24\n Max Deflection: 6.21e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.93373488246695, + "fos_buckling": 0.23602983625786458, + "fos_yielding": 2.1625358968577, + "deflection": 6206870538354.922, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.318)" + }, + "parent_node_id": "node_2683", + "improvement_over_parent": null + }, + "node_2685": { + "node_id": "node_2685", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 168.09 kg\n Factor of Safety: 0.02\n Max Deflection: 3.55e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.08754962076478, + "fos_buckling": 0.02211189222631827, + "fos_yielding": 0.5406339742144249, + "deflection": 35464868693661.52, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2684", + "improvement_over_parent": null + }, + "node_2686": { + "node_id": "node_2686", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 180.64 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.63590724086103, + "fos_buckling": 0.12790146211265735, + "fos_yielding": 2.1485718880311717, + "deflection": 0.004836229155141323, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2685", + "improvement_over_parent": null + }, + "node_2687": { + "node_id": "node_2687", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.29 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28787559223443, + "fos_buckling": 1.5681016494135733, + "fos_yielding": 4.15203377792751, + "deflection": 0.0014502525811547395, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_2686", + "improvement_over_parent": null + }, + "node_2688": { + "node_id": "node_2688", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2687", + "improvement_over_parent": null + }, + "node_2689": { + "node_id": "node_2689", + "content": "INITIAL DESIGN (Trace 390)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 138.34 kg\n Factor of Safety: 0.59\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.33779609674613, + "fos_buckling": 0.5875389760446791, + "fos_yielding": 2.8659849308582257, + "deflection": 0.0023514392749771863, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2690": { + "node_id": "node_2690", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 147.10 kg\n Factor of Safety: 0.67\n Max Deflection: 2.30e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.09820536308817, + "fos_buckling": 0.6692829610644582, + "fos_yielding": 2.8737746714651253, + "deflection": 0.0022957006274592667, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002100)" + }, + "parent_node_id": "node_2689", + "improvement_over_parent": null + }, + "node_2691": { + "node_id": "node_2691", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 169.89 kg\n Factor of Safety: 0.76\n Max Deflection: 1.99e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.8892959408822, + "fos_buckling": 0.7577640278040323, + "fos_yielding": 3.3163885317481445, + "deflection": 0.0019893481438568728, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.166)" + }, + "parent_node_id": "node_2690", + "improvement_over_parent": null + }, + "node_2692": { + "node_id": "node_2692", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 210.93 kg\n Factor of Safety: 0.91\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.92602806708138, + "fos_buckling": 0.907388041154754, + "fos_yielding": 4.111404054159872, + "deflection": 0.0016045789247246293, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.264)" + }, + "parent_node_id": "node_2691", + "improvement_over_parent": null + }, + "node_2693": { + "node_id": "node_2693", + "content": "MODIFICATION: Increase 7 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22665950075876, + "fos_buckling": 1.567776799857836, + "fos_yielding": 4.150606996430384, + "deflection": 0.0014506063639577761, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.431)" + }, + "parent_node_id": "node_2692", + "improvement_over_parent": null + }, + "node_2694": { + "node_id": "node_2694", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2693", + "improvement_over_parent": null + }, + "node_2695": { + "node_id": "node_2695", + "content": "INITIAL DESIGN (Trace 391)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 125.75 kg\n Factor of Safety: 0.98\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.7508545734865, + "fos_buckling": 0.9832145189575251, + "fos_yielding": 2.631475423612438, + "deflection": 0.002413723536804907, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2696": { + "node_id": "node_2696", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 133.63 kg\n Factor of Safety: 1.00\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 133.6268320613047, + "fos_buckling": 0.9961842334204822, + "fos_yielding": 2.6410797231258796, + "deflection": 0.002413373614286228, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001876)" + }, + "parent_node_id": "node_2695", + "improvement_over_parent": null + }, + "node_2697": { + "node_id": "node_2697", + "content": "MODIFICATION: Increase 2 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 134.33 kg\n Factor of Safety: 1.00\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.32899162410223, + "fos_buckling": 0.9965637234203294, + "fos_yielding": 2.64131806540949, + "deflection": 0.0024135421957290812, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.484)" + }, + "parent_node_id": "node_2696", + "improvement_over_parent": null + }, + "node_2698": { + "node_id": "node_2698", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 161.73 kg\n Factor of Safety: 1.17\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.73465876301094, + "fos_buckling": 1.1725020975460765, + "fos_yielding": 3.1781763418009272, + "deflection": 0.002007397284423195, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.218)" + }, + "parent_node_id": "node_2697", + "improvement_over_parent": null + }, + "node_2699": { + "node_id": "node_2699", + "content": "MODIFICATION: Increase 7 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 164.04 kg\n Factor of Safety: 1.17\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.04032367207753, + "fos_buckling": 1.1738136984959053, + "fos_yielding": 3.1785268216122917, + "deflection": 0.0020073726453415704, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.587)" + }, + "parent_node_id": "node_2698", + "improvement_over_parent": null + }, + "node_2700": { + "node_id": "node_2700", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 192.18 kg\n Factor of Safety: 1.34\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.18050333216593, + "fos_buckling": 1.3427547248976521, + "fos_yielding": 3.7215849935997425, + "deflection": 0.001715686464413889, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.186)" + }, + "parent_node_id": "node_2699", + "improvement_over_parent": null + }, + "node_2701": { + "node_id": "node_2701", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 197.63 kg\n Factor of Safety: 1.42\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 197.6279600303354, + "fos_buckling": 1.418997363421015, + "fos_yielding": 3.676515923062691, + "deflection": 0.0016358772876311643, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002246)" + }, + "parent_node_id": "node_2700", + "improvement_over_parent": null + }, + "node_2702": { + "node_id": "node_2702", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3472911569693, + "fos_buckling": 1.568540312003128, + "fos_yielding": 4.153069438383539, + "deflection": 0.0014498465595315486, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.143)" + }, + "parent_node_id": "node_2701", + "improvement_over_parent": null + }, + "node_2703": { + "node_id": "node_2703", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2702", + "improvement_over_parent": null + }, + "node_2704": { + "node_id": "node_2704", + "content": "INITIAL DESIGN (Trace 392)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 169.10 kg\n Factor of Safety: 0.63\n Max Deflection: 3.67e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.10210848445817, + "fos_buckling": 0.6322129818773362, + "fos_yielding": 0.540633974214425, + "deflection": 36664446758553.27, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2705": { + "node_id": "node_2705", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 175.38 kg\n Factor of Safety: 0.06\n Max Deflection: 7.00e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.37814995794275, + "fos_buckling": 0.06040203262685253, + "fos_yielding": 1.2781581227901233, + "deflection": 0.006998596433997027, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001821)" + }, + "parent_node_id": "node_2704", + "improvement_over_parent": null + }, + "node_2706": { + "node_id": "node_2706", + "content": "MODIFICATION: Increase 7 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0036)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 179.25 kg\n Factor of Safety: 0.06\n Max Deflection: 7.00e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.25348312179466, + "fos_buckling": 0.06037723744718791, + "fos_yielding": 1.2776334358066543, + "deflection": 0.006999100073252433, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.408)" + }, + "parent_node_id": "node_2705", + "improvement_over_parent": null + }, + "node_2707": { + "node_id": "node_2707", + "content": "MODIFICATION: Increase 8 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0036)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0068)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 186.85 kg\n Factor of Safety: 0.06\n Max Deflection: 6.92e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.85296881366318, + "fos_buckling": 0.06032867342617492, + "fos_yielding": 1.2766057800269799, + "deflection": 0.006917869301881397, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.200)" + }, + "parent_node_id": "node_2706", + "improvement_over_parent": null + }, + "node_2708": { + "node_id": "node_2708", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0036)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0068)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 230.46 kg\n Factor of Safety: 1.57\n Max Deflection: 1.39e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 230.46402305642388, + "fos_buckling": 1.5696883893799733, + "fos_yielding": 4.155717246593639, + "deflection": 0.0013935359302307225, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2707", + "improvement_over_parent": null + }, + "node_2709": { + "node_id": "node_2709", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2708", + "improvement_over_parent": null + }, + "node_2710": { + "node_id": "node_2710", + "content": "INITIAL DESIGN (Trace 393)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 166.94 kg\n Factor of Safety: 0.18\n Max Deflection: 7.79e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.93950821153976, + "fos_buckling": 0.17690045272099605, + "fos_yielding": 4.117520965858295, + "deflection": 7791325237274.658, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2711": { + "node_id": "node_2711", + "content": "MODIFICATION: Increase 5 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 169.21 kg\n Factor of Safety: 1.46\n Max Deflection: 1.07e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.21340442760803, + "fos_buckling": 1.4587724547268635, + "fos_yielding": 4.19645566016795, + "deflection": 10650726135927.893, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.642)" + }, + "parent_node_id": "node_2710", + "improvement_over_parent": null + }, + "node_2712": { + "node_id": "node_2712", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 177.83 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.82650904236868, + "fos_buckling": 0.06038634070608061, + "fos_yielding": 1.4763967807673046, + "deflection": 0.006102605873090478, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2711", + "improvement_over_parent": null + }, + "node_2713": { + "node_id": "node_2713", + "content": "MODIFICATION: Increase 3 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 179.66 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.65763183095092, + "fos_buckling": 0.06037462835521805, + "fos_yielding": 1.4761104233409974, + "deflection": 0.006102364625217859, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.600)" + }, + "parent_node_id": "node_2712", + "improvement_over_parent": null + }, + "node_2714": { + "node_id": "node_2714", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26868607371162, + "fos_buckling": 1.568042382901926, + "fos_yielding": 4.151339553292088, + "deflection": 0.00145039735551354, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2713", + "improvement_over_parent": null + }, + "node_2715": { + "node_id": "node_2715", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2714", + "improvement_over_parent": null + }, + "node_2716": { + "node_id": "node_2716", + "content": "INITIAL DESIGN (Trace 394)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 212.40 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.40254403292587, + "fos_buckling": 1.4759757220954848, + "fos_yielding": 4.1951076006080354, + "deflection": 0.0015198541117944222, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2717": { + "node_id": "node_2717", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 218.56 kg\n Factor of Safety: 1.40\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.5563587712237, + "fos_buckling": 1.3970423014662356, + "fos_yielding": 4.195107600608034, + "deflection": 0.001473981665824955, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2716", + "improvement_over_parent": null + }, + "node_2718": { + "node_id": "node_2718", + "content": "MODIFICATION: Increase 2 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.70 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.70082216874263, + "fos_buckling": 1.5224261824922882, + "fos_yielding": 4.195107600608034, + "deflection": 0.0014706327793425642, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.312)" + }, + "parent_node_id": "node_2717", + "improvement_over_parent": null + }, + "node_2719": { + "node_id": "node_2719", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25522950444065, + "fos_buckling": 1.5679947888055104, + "fos_yielding": 4.151340471772713, + "deflection": 0.0014504446485639432, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2718", + "improvement_over_parent": null + }, + "node_2720": { + "node_id": "node_2720", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2719", + "improvement_over_parent": null + }, + "node_2721": { + "node_id": "node_2721", + "content": "INITIAL DESIGN (Trace 395)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 147.95 kg\n Factor of Safety: 0.11\n Max Deflection: 5.80e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.9509428421653, + "fos_buckling": 0.10997879792617336, + "fos_yielding": 1.7933705673649594, + "deflection": 0.005797356516018576, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2722": { + "node_id": "node_2722", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 183.47 kg\n Factor of Safety: 1.32\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.47283181023246, + "fos_buckling": 1.3165844263191937, + "fos_yielding": 3.461647845101103, + "deflection": 0.001791090218197933, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004677)" + }, + "parent_node_id": "node_2721", + "improvement_over_parent": null + }, + "node_2723": { + "node_id": "node_2723", + "content": "MODIFICATION: Increase 1 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 185.93 kg\n Factor of Safety: 1.35\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.93007745496806, + "fos_buckling": 1.34843530602698, + "fos_yielding": 3.4595750554364173, + "deflection": 0.0017375746605230826, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.218)" + }, + "parent_node_id": "node_2722", + "improvement_over_parent": null + }, + "node_2724": { + "node_id": "node_2724", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3439468228579, + "fos_buckling": 1.5686341156382722, + "fos_yielding": 4.152953008111067, + "deflection": 0.0014499150538887498, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.221)" + }, + "parent_node_id": "node_2723", + "improvement_over_parent": null + }, + "node_2725": { + "node_id": "node_2725", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2724", + "improvement_over_parent": null + }, + "node_2726": { + "node_id": "node_2726", + "content": "INITIAL DESIGN (Trace 396)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 166.94 kg\n Factor of Safety: 1.08\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.93917036829555, + "fos_buckling": 1.0806464009573573, + "fos_yielding": 3.2513711301580934, + "deflection": 0.0019774902113434893, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2727": { + "node_id": "node_2727", + "content": "MODIFICATION: Increase 1 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 170.18 kg\n Factor of Safety: 1.23\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.1783937696793, + "fos_buckling": 1.2318381422906408, + "fos_yielding": 3.251371130158093, + "deflection": 0.0018921705767887416, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.335)" + }, + "parent_node_id": "node_2726", + "improvement_over_parent": null + }, + "node_2728": { + "node_id": "node_2728", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.64 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.63799551307736, + "fos_buckling": 1.5220175806086853, + "fos_yielding": 4.193714323966625, + "deflection": 0.001471016049742387, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_2727", + "improvement_over_parent": null + }, + "node_2729": { + "node_id": "node_2729", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.19 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.19240284877537, + "fos_buckling": 1.5675432375757525, + "fos_yielding": 4.1499578910048776, + "deflection": 0.0014508198940792962, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2728", + "improvement_over_parent": null + }, + "node_2730": { + "node_id": "node_2730", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2729", + "improvement_over_parent": null + }, + "node_2731": { + "node_id": "node_2731", + "content": "INITIAL DESIGN (Trace 397)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0018)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 109.53 kg\n Factor of Safety: 0.46\n Max Deflection: 2.99e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.52671263080596, + "fos_buckling": 0.45900914856707287, + "fos_yielding": 1.6831229930733453, + "deflection": 0.002992714913644406, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2732": { + "node_id": "node_2732", + "content": "MODIFICATION: Increase 6 thickness by 66%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 116.01 kg\n Factor of Safety: 0.52\n Max Deflection: 2.92e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.00893714774334, + "fos_buckling": 0.5223243791636255, + "fos_yielding": 2.2749247169589206, + "deflection": 0.0029213224092415674, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.656)" + }, + "parent_node_id": "node_2731", + "improvement_over_parent": null + }, + "node_2733": { + "node_id": "node_2733", + "content": "MODIFICATION: Increase 7 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 123.46 kg\n Factor of Safety: 0.94\n Max Deflection: 2.61e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.45651153412791, + "fos_buckling": 0.9426897480278362, + "fos_yielding": 2.299420918521244, + "deflection": 0.0026064894188846267, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.468)" + }, + "parent_node_id": "node_2732", + "improvement_over_parent": null + }, + "node_2734": { + "node_id": "node_2734", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 157.70 kg\n Factor of Safety: 1.17\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.6954499316454, + "fos_buckling": 1.17083903326979, + "fos_yielding": 2.9353410686688526, + "deflection": 0.002044991492176499, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_2733", + "improvement_over_parent": null + }, + "node_2735": { + "node_id": "node_2735", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 199.42 kg\n Factor of Safety: 1.43\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.41805760395312, + "fos_buckling": 1.4295530775717162, + "fos_yielding": 3.7092078067998435, + "deflection": 0.0016213984461074804, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_2734", + "improvement_over_parent": null + }, + "node_2736": { + "node_id": "node_2736", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.55 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.5512596242647, + "fos_buckling": 1.569578592194325, + "fos_yielding": 4.156303740094308, + "deflection": 0.0014485623860081753, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.133)" + }, + "parent_node_id": "node_2735", + "improvement_over_parent": null + }, + "node_2737": { + "node_id": "node_2737", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2736", + "improvement_over_parent": null + }, + "node_2738": { + "node_id": "node_2738", + "content": "INITIAL DESIGN (Trace 398)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 138.62 kg\n Factor of Safety: 0.15\n Max Deflection: 1.14e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.6235656146132, + "fos_buckling": 0.15134282101970842, + "fos_yielding": 2.1625358968577, + "deflection": 11377580673710.691, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2739": { + "node_id": "node_2739", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 163.94 kg\n Factor of Safety: 1.45\n Max Deflection: 5.32e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.93682435672054, + "fos_buckling": 1.4460987218672543, + "fos_yielding": 4.193864944691293, + "deflection": 5315507317647.836, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_2738", + "improvement_over_parent": null + }, + "node_2740": { + "node_id": "node_2740", + "content": "MODIFICATION: Increase 1 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 167.03 kg\n Factor of Safety: 0.94\n Max Deflection: 6.64e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.02587712814153, + "fos_buckling": 0.9409061712254176, + "fos_yielding": 4.193864944691293, + "deflection": 6641924682957.134, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.314)" + }, + "parent_node_id": "node_2739", + "improvement_over_parent": null + }, + "node_2741": { + "node_id": "node_2741", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 210.64 kg\n Factor of Safety: 1.35\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.63693137090223, + "fos_buckling": 1.3504988700775415, + "fos_yielding": 4.193864944691293, + "deflection": 0.0015315086986429217, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2740", + "improvement_over_parent": null + }, + "node_2742": { + "node_id": "node_2742", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.25 kg\n Factor of Safety: 1.44\n Max Deflection: 1.51e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.2500359856629, + "fos_buckling": 1.4350345912981137, + "fos_yielding": 4.152370577375114, + "deflection": 0.001513981044818169, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2741", + "improvement_over_parent": null + }, + "node_2743": { + "node_id": "node_2743", + "content": "MODIFICATION: Increase 1 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.15 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1490097479221, + "fos_buckling": 1.5672787454348074, + "fos_yielding": 4.1488443787679365, + "deflection": 0.0014511324888352066, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.314)" + }, + "parent_node_id": "node_2742", + "improvement_over_parent": null + }, + "node_2744": { + "node_id": "node_2744", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2743", + "improvement_over_parent": null + }, + "node_2745": { + "node_id": "node_2745", + "content": "INITIAL DESIGN (Trace 399)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2746": { + "node_id": "node_2746", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 215.69 kg\n Factor of Safety: 1.05\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.68758439980684, + "fos_buckling": 1.0534522564843816, + "fos_yielding": 4.145874167157989, + "deflection": 0.0015009498698792783, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2745", + "improvement_over_parent": null + }, + "node_2747": { + "node_id": "node_2747", + "content": "MODIFICATION: Increase 2 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 216.96 kg\n Factor of Safety: 1.36\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.96212964334106, + "fos_buckling": 1.3583662970077925, + "fos_yielding": 4.139029654430784, + "deflection": 0.0014971515813147788, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.613)" + }, + "parent_node_id": "node_2746", + "improvement_over_parent": null + }, + "node_2748": { + "node_id": "node_2748", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 222.14 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.13647252006973, + "fos_buckling": 1.5626841543593932, + "fos_yielding": 4.1545254138135395, + "deflection": 0.0014546570911299153, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2747", + "improvement_over_parent": null + }, + "node_2749": { + "node_id": "node_2749", + "content": "MODIFICATION: Increase 5 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0071)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 228.75 kg\n Factor of Safety: 1.36\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.74916927711175, + "fos_buckling": 1.3578309585179202, + "fos_yielding": 4.158663206225509, + "deflection": 0.0014432203629066132, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.245)" + }, + "parent_node_id": "node_2748", + "improvement_over_parent": null + }, + "node_2750": { + "node_id": "node_2750", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2749", + "improvement_over_parent": null + }, + "node_2751": { + "node_id": "node_2751", + "content": "INITIAL DESIGN (Trace 400)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 172.06 kg\n Factor of Safety: 1.20\n Max Deflection: 2.10e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.05624408713248, + "fos_buckling": 1.197586095436109, + "fos_yielding": 3.5342506441960406, + "deflection": 0.0021047298209787057, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2752": { + "node_id": "node_2752", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 176.62 kg\n Factor of Safety: 0.94\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.62103857631047, + "fos_buckling": 0.9359040089649779, + "fos_yielding": 3.7037133832043168, + "deflection": 0.001948504609343912, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002072)" + }, + "parent_node_id": "node_2751", + "improvement_over_parent": null + }, + "node_2753": { + "node_id": "node_2753", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 200.38 kg\n Factor of Safety: 1.04\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.3793229519773, + "fos_buckling": 1.0389647205914416, + "fos_yielding": 4.197997403822078, + "deflection": 0.0017181543917336643, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.147)" + }, + "parent_node_id": "node_2752", + "improvement_over_parent": null + }, + "node_2754": { + "node_id": "node_2754", + "content": "MODIFICATION: Increase 1 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 203.47 kg\n Factor of Safety: 1.29\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.47443480600398, + "fos_buckling": 1.288472344181886, + "fos_yielding": 4.197997403822078, + "deflection": 0.0016303523227363804, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.340)" + }, + "parent_node_id": "node_2753", + "improvement_over_parent": null + }, + "node_2755": { + "node_id": "node_2755", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 212.09 kg\n Factor of Safety: 1.32\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.08753942076464, + "fos_buckling": 1.322282464325281, + "fos_yielding": 4.139426433745422, + "deflection": 0.001601151935564595, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2754", + "improvement_over_parent": null + }, + "node_2756": { + "node_id": "node_2756", + "content": "MODIFICATION: Increase 7 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0037)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 214.24 kg\n Factor of Safety: 1.28\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.2364711864098, + "fos_buckling": 1.2790166305533681, + "fos_yielding": 4.140315599264561, + "deflection": 0.0015974362257003098, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.192)" + }, + "parent_node_id": "node_2755", + "improvement_over_parent": null + }, + "node_2757": { + "node_id": "node_2757", + "content": "MODIFICATION: Increase 1 thickness by 41%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0037)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 218.97 kg\n Factor of Safety: 1.25\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.97312826922376, + "fos_buckling": 1.2467491538154694, + "fos_yielding": 4.135651336850117, + "deflection": 0.0015174726590515678, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.406)" + }, + "parent_node_id": "node_2756", + "improvement_over_parent": null + }, + "node_2758": { + "node_id": "node_2758", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2757", + "improvement_over_parent": null + }, + "node_2759": { + "node_id": "node_2759", + "content": "INITIAL DESIGN (Trace 401)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 169.83 kg\n Factor of Safety: 0.96\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.83216169379025, + "fos_buckling": 0.9570272423971375, + "fos_yielding": 3.784516623715836, + "deflection": 0.0019621455738138014, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2760": { + "node_id": "node_2760", + "content": "MODIFICATION: Increase 8 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 182.21 kg\n Factor of Safety: 1.34\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.2084888480327, + "fos_buckling": 1.3405617676469999, + "fos_yielding": 3.784516623715836, + "deflection": 0.0017082425455190078, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.515)" + }, + "parent_node_id": "node_2759", + "improvement_over_parent": null + }, + "node_2761": { + "node_id": "node_2761", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 189.97 kg\n Factor of Safety: 1.24\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.97310926770325, + "fos_buckling": 1.2385546875746722, + "fos_yielding": 3.732588916056051, + "deflection": 0.0016567699583655245, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002290)" + }, + "parent_node_id": "node_2760", + "improvement_over_parent": null + }, + "node_2762": { + "node_id": "node_2762", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.72 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.71736053778847, + "fos_buckling": 1.3393626793370694, + "fos_yielding": 4.138536055980875, + "deflection": 0.001495811063889623, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_2761", + "improvement_over_parent": null + }, + "node_2763": { + "node_id": "node_2763", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26571815788472, + "fos_buckling": 1.5679159263942406, + "fos_yielding": 4.151642290620664, + "deflection": 0.0014504015866786582, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2762", + "improvement_over_parent": null + }, + "node_2764": { + "node_id": "node_2764", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2763", + "improvement_over_parent": null + }, + "node_2765": { + "node_id": "node_2765", + "content": "INITIAL DESIGN (Trace 402)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n\nPerformance:\n Mass: 143.70 kg\n Factor of Safety: 0.07\n Max Deflection: 1.05e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.69813124916607, + "fos_buckling": 0.07219946013521047, + "fos_yielding": 2.0856856396707975, + "deflection": 10544059862778.56, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2766": { + "node_id": "node_2766", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 182.16 kg\n Factor of Safety: 1.06\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.16209050994192, + "fos_buckling": 1.061719373123136, + "fos_yielding": 3.002036351708923, + "deflection": 0.0016838342881646698, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005098)" + }, + "parent_node_id": "node_2765", + "improvement_over_parent": null + }, + "node_2767": { + "node_id": "node_2767", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 187.71 kg\n Factor of Safety: 1.06\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.71215714709757, + "fos_buckling": 1.0617193731231354, + "fos_yielding": 3.002036351708921, + "deflection": 0.0016570787033046905, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002292)" + }, + "parent_node_id": "node_2766", + "improvement_over_parent": null + }, + "node_2768": { + "node_id": "node_2768", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 208.28 kg\n Factor of Safety: 1.17\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.2812568462465, + "fos_buckling": 1.1678057050790351, + "fos_yielding": 3.3406388756183976, + "deflection": 0.001496172956200805, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_2767", + "improvement_over_parent": null + }, + "node_2769": { + "node_id": "node_2769", + "content": "MODIFICATION: Increase 5 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0088)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 228.08 kg\n Factor of Safety: 1.17\n Max Deflection: 1.37e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.07760767934312, + "fos_buckling": 1.167805705079035, + "fos_yielding": 3.3406388756183967, + "deflection": 0.0013723962424073608, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.527)" + }, + "parent_node_id": "node_2768", + "improvement_over_parent": null + }, + "node_2770": { + "node_id": "node_2770", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0088)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 233.25 kg\n Factor of Safety: 1.15\n Max Deflection: 1.35e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 233.2519505560718, + "fos_buckling": 1.1538898788544438, + "fos_yielding": 3.300831097774845, + "deflection": 0.0013538825151262627, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2769", + "improvement_over_parent": null + }, + "node_2771": { + "node_id": "node_2771", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2770", + "improvement_over_parent": null + }, + "node_2772": { + "node_id": "node_2772", + "content": "INITIAL DESIGN (Trace 403)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 164.16 kg\n Factor of Safety: 0.06\n Max Deflection: 6.46e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.16293821657246, + "fos_buckling": 0.06042710362604622, + "fos_yielding": 1.4773934009153087, + "deflection": 0.0064634283963900105, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2773": { + "node_id": "node_2773", + "content": "MODIFICATION: Increase 8 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 167.99 kg\n Factor of Safety: 0.06\n Max Deflection: 6.45e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.98780843355945, + "fos_buckling": 0.060402610872304904, + "fos_yielding": 1.4767945730619731, + "deflection": 0.006447029322032804, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.481)" + }, + "parent_node_id": "node_2772", + "improvement_over_parent": null + }, + "node_2774": { + "node_id": "node_2774", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 211.60 kg\n Factor of Safety: 1.18\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.59886267632015, + "fos_buckling": 1.1762289982964822, + "fos_yielding": 3.3719550680080546, + "deflection": 0.0014859140218552525, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2773", + "improvement_over_parent": null + }, + "node_2775": { + "node_id": "node_2775", + "content": "MODIFICATION: Increase 6 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 221.09 kg\n Factor of Safety: 1.41\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.09396511751638, + "fos_buckling": 1.4077765776181246, + "fos_yielding": 4.158525271190642, + "deflection": 0.0014599911344122692, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.497)" + }, + "parent_node_id": "node_2774", + "improvement_over_parent": null + }, + "node_2776": { + "node_id": "node_2776", + "content": "MODIFICATION: Increase 5 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27883275377238, + "fos_buckling": 1.5681085587128845, + "fos_yielding": 4.151345980966487, + "deflection": 0.001450370560825771, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.603)" + }, + "parent_node_id": "node_2775", + "improvement_over_parent": null + }, + "node_2777": { + "node_id": "node_2777", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2776", + "improvement_over_parent": null + }, + "node_2778": { + "node_id": "node_2778", + "content": "INITIAL DESIGN (Trace 404)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 101.21 kg\n Factor of Safety: 0.05\n Max Deflection: 1.59e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 101.21197885693017, + "fos_buckling": 0.05246945231038654, + "fos_yielding": 0.7350356306986765, + "deflection": 15886227110493.127, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2779": { + "node_id": "node_2779", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n\nPerformance:\n Mass: 102.96 kg\n Factor of Safety: 0.03\n Max Deflection: 1.68e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 102.96406115130377, + "fos_buckling": 0.03269833170950664, + "fos_yielding": 0.7324695465643438, + "deflection": 0.016815585700288536, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000926)" + }, + "parent_node_id": "node_2778", + "improvement_over_parent": null + }, + "node_2780": { + "node_id": "node_2780", + "content": "MODIFICATION: Increase 5 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0054)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n\nPerformance:\n Mass: 108.67 kg\n Factor of Safety: 0.03\n Max Deflection: 1.67e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 108.67075981466284, + "fos_buckling": 0.03269833170950664, + "fos_yielding": 0.7324695465643438, + "deflection": 0.016660288140171845, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.266)" + }, + "parent_node_id": "node_2779", + "improvement_over_parent": null + }, + "node_2781": { + "node_id": "node_2781", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0054)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 141.52 kg\n Factor of Safety: 0.03\n Max Deflection: 9.16e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.5222588597185, + "fos_buckling": 0.03258417423686303, + "fos_yielding": 0.7299123252061702, + "deflection": 0.009162031647020905, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004300)" + }, + "parent_node_id": "node_2780", + "improvement_over_parent": null + }, + "node_2782": { + "node_id": "node_2782", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0054)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n\nPerformance:\n Mass: 175.11 kg\n Factor of Safety: 1.05\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.1109779804192, + "fos_buckling": 1.0478281141819565, + "fos_yielding": 3.209500666674299, + "deflection": 0.0018721597419820765, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004348)" + }, + "parent_node_id": "node_2781", + "improvement_over_parent": null + }, + "node_2783": { + "node_id": "node_2783", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0072)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 227.25 kg\n Factor of Safety: 1.31\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 227.25418485685333, + "fos_buckling": 1.3094452396598557, + "fos_yielding": 4.164648187547313, + "deflection": 0.0014461163470101293, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.328)" + }, + "parent_node_id": "node_2782", + "improvement_over_parent": null + }, + "node_2784": { + "node_id": "node_2784", + "content": "MODIFICATION: Increase 2 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0032)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0072)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 229.58 kg\n Factor of Safety: 1.32\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 229.5794223105366, + "fos_buckling": 1.3183793743137286, + "fos_yielding": 4.166248487799947, + "deflection": 0.0014413208431155384, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.603)" + }, + "parent_node_id": "node_2783", + "improvement_over_parent": null + }, + "node_2785": { + "node_id": "node_2785", + "content": "MODIFICATION: Increase 3 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0032)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0073)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0072)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 235.79 kg\n Factor of Safety: 1.15\n Max Deflection: 1.43e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 235.79383775789978, + "fos_buckling": 1.1457810088696225, + "fos_yielding": 4.885038916077839, + "deflection": 0.001434362788915291, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.199)" + }, + "parent_node_id": "node_2784", + "improvement_over_parent": null + }, + "node_2786": { + "node_id": "node_2786", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2785", + "improvement_over_parent": null + }, + "node_2787": { + "node_id": "node_2787", + "content": "INITIAL DESIGN (Trace 405)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 140.98 kg\n Factor of Safety: 1.06\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.98021813471325, + "fos_buckling": 1.0613190379064519, + "fos_yielding": 2.625287016980342, + "deflection": 0.00228504732843788, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2788": { + "node_id": "node_2788", + "content": "MODIFICATION: Increase all_members thickness by 11%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 156.09 kg\n Factor of Safety: 1.16\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.09337783343275, + "fos_buckling": 1.1605578909908392, + "fos_yielding": 2.905934049474829, + "deflection": 0.0020657792206743644, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.114)" + }, + "parent_node_id": "node_2787", + "improvement_over_parent": null + }, + "node_2789": { + "node_id": "node_2789", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 194.46 kg\n Factor of Safety: 1.40\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.4597464419199, + "fos_buckling": 1.399995765124742, + "fos_yielding": 3.6177059000233704, + "deflection": 0.0016622273588377079, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.266)" + }, + "parent_node_id": "node_2788", + "improvement_over_parent": null + }, + "node_2790": { + "node_id": "node_2790", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31061381604152, + "fos_buckling": 1.5683033892396716, + "fos_yielding": 4.15230411059903, + "deflection": 0.0014501068559186607, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_2789", + "improvement_over_parent": null + }, + "node_2791": { + "node_id": "node_2791", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2790", + "improvement_over_parent": null + }, + "node_2792": { + "node_id": "node_2792", + "content": "INITIAL DESIGN (Trace 406)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 192.26 kg\n Factor of Safety: 0.76\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.25640941676812, + "fos_buckling": 0.7567533143659506, + "fos_yielding": 4.096755105057072, + "deflection": 0.0017278133776861054, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2793": { + "node_id": "node_2793", + "content": "MODIFICATION: Increase 8 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 194.44 kg\n Factor of Safety: 0.66\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.4373712520253, + "fos_buckling": 0.663754223889726, + "fos_yielding": 4.082840159330704, + "deflection": 0.0017166361109252361, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.372)" + }, + "parent_node_id": "node_2792", + "improvement_over_parent": null + }, + "node_2794": { + "node_id": "node_2794", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 206.99 kg\n Factor of Safety: 0.73\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.98572887212154, + "fos_buckling": 0.7334312263935494, + "fos_yielding": 4.093161034037197, + "deflection": 0.0016800500386996574, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2793", + "improvement_over_parent": null + }, + "node_2795": { + "node_id": "node_2795", + "content": "MODIFICATION: Increase 7 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26799258610168, + "fos_buckling": 1.5680106937723028, + "fos_yielding": 4.151354863221337, + "deflection": 0.00145036841112239, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.653)" + }, + "parent_node_id": "node_2794", + "improvement_over_parent": null + }, + "node_2796": { + "node_id": "node_2796", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2795", + "improvement_over_parent": null + }, + "node_2797": { + "node_id": "node_2797", + "content": "INITIAL DESIGN (Trace 407)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 141.46 kg\n Factor of Safety: 0.15\n Max Deflection: 1.05e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.46300589678705, + "fos_buckling": 0.1518147712705113, + "fos_yielding": 2.2051068920960297, + "deflection": 10497043197238.287, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2798": { + "node_id": "node_2798", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 177.55 kg\n Factor of Safety: 1.25\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.552692187092, + "fos_buckling": 1.2469207232777217, + "fos_yielding": 3.473747421131898, + "deflection": 0.001867282418547536, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004697)" + }, + "parent_node_id": "node_2797", + "improvement_over_parent": null + }, + "node_2799": { + "node_id": "node_2799", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 181.84 kg\n Factor of Safety: 1.30\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.83570097559394, + "fos_buckling": 1.3028733818452687, + "fos_yielding": 3.4737474211318986, + "deflection": 0.0017723454413883656, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001934)" + }, + "parent_node_id": "node_2798", + "improvement_over_parent": null + }, + "node_2800": { + "node_id": "node_2800", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 184.78 kg\n Factor of Safety: 1.34\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.77830067298402, + "fos_buckling": 1.3412756482482324, + "fos_yielding": 3.43821930620754, + "deflection": 0.0017482706685230617, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001603)" + }, + "parent_node_id": "node_2799", + "improvement_over_parent": null + }, + "node_2801": { + "node_id": "node_2801", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3088329703934, + "fos_buckling": 1.5683089914814083, + "fos_yielding": 4.152308471210218, + "deflection": 0.001450133513087501, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.229)" + }, + "parent_node_id": "node_2800", + "improvement_over_parent": null + }, + "node_2802": { + "node_id": "node_2802", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2801", + "improvement_over_parent": null + }, + "node_2803": { + "node_id": "node_2803", + "content": "INITIAL DESIGN (Trace 408)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 202.92 kg\n Factor of Safety: 1.46\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.9207007788394, + "fos_buckling": 1.4588268153591823, + "fos_yielding": 4.19645566016795, + "deflection": 0.0017160818105106572, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2804": { + "node_id": "node_2804", + "content": "MODIFICATION: Increase 1 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.47 kg\n Factor of Safety: 1.46\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.46968945102824, + "fos_buckling": 1.4578180345628031, + "fos_yielding": 4.19645566016795, + "deflection": 0.0015497789539218013, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.653)" + }, + "parent_node_id": "node_2803", + "improvement_over_parent": null + }, + "node_2805": { + "node_id": "node_2805", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 213.61 kg\n Factor of Safety: 1.43\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.61268002389073, + "fos_buckling": 1.429405098544232, + "fos_yielding": 4.19645566016795, + "deflection": 0.0014731160024557205, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001866)" + }, + "parent_node_id": "node_2804", + "improvement_over_parent": null + }, + "node_2806": { + "node_id": "node_2806", + "content": "MODIFICATION: Increase 3 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0078)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 222.04 kg\n Factor of Safety: 1.43\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.0408605794706, + "fos_buckling": 1.429405098544232, + "fos_yielding": 4.791801282504901, + "deflection": 0.0014731160024557205, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.272)" + }, + "parent_node_id": "node_2805", + "improvement_over_parent": null + }, + "node_2807": { + "node_id": "node_2807", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0078)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 230.65 kg\n Factor of Safety: 1.13\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 230.65396519423126, + "fos_buckling": 1.1270378364061704, + "fos_yielding": 4.809882414386158, + "deflection": 0.0014414697425556109, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2806", + "improvement_over_parent": null + }, + "node_2808": { + "node_id": "node_2808", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2807", + "improvement_over_parent": null + }, + "node_2809": { + "node_id": "node_2809", + "content": "INITIAL DESIGN (Trace 409)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 121.71 kg\n Factor of Safety: 0.75\n Max Deflection: 4.41e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.71335094367424, + "fos_buckling": 0.745626599830715, + "fos_yielding": 2.1625358968577, + "deflection": 4407057087495.962, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2810": { + "node_id": "node_2810", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 126.26 kg\n Factor of Safety: 0.62\n Max Deflection: 3.93e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.2556909808318, + "fos_buckling": 0.6167968420119896, + "fos_yielding": 3.0997037835168624, + "deflection": 3930565035219.508, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001847)" + }, + "parent_node_id": "node_2809", + "improvement_over_parent": null + }, + "node_2811": { + "node_id": "node_2811", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 148.65 kg\n Factor of Safety: 0.30\n Max Deflection: 4.96e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.65283269773803, + "fos_buckling": 0.30144430529590327, + "fos_yielding": 2.1625358968577, + "deflection": 4960386229395.665, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.192)" + }, + "parent_node_id": "node_2810", + "improvement_over_parent": null + }, + "node_2812": { + "node_id": "node_2812", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 186.57 kg\n Factor of Safety: 1.36\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.56567018097383, + "fos_buckling": 1.3583570625861954, + "fos_yielding": 3.6484038679388733, + "deflection": 0.0016881446260469096, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004954)" + }, + "parent_node_id": "node_2811", + "improvement_over_parent": null + }, + "node_2813": { + "node_id": "node_2813", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 194.05 kg\n Factor of Safety: 1.40\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.05497392536688, + "fos_buckling": 1.397472377799979, + "fos_yielding": 3.6099249133489577, + "deflection": 0.0016656370599351176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002202)" + }, + "parent_node_id": "node_2812", + "improvement_over_parent": null + }, + "node_2814": { + "node_id": "node_2814", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.38 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3752606355938, + "fos_buckling": 1.5685725255232321, + "fos_yielding": 4.153187661283123, + "deflection": 0.0014496803877681655, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.166)" + }, + "parent_node_id": "node_2813", + "improvement_over_parent": null + }, + "node_2815": { + "node_id": "node_2815", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2814", + "improvement_over_parent": null + }, + "node_2816": { + "node_id": "node_2816", + "content": "INITIAL DESIGN (Trace 410)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 145.91 kg\n Factor of Safety: 1.06\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.9084774240919, + "fos_buckling": 1.0599399035463988, + "fos_yielding": 2.8282060610217497, + "deflection": 0.0022549729939127273, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2817": { + "node_id": "node_2817", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 178.30 kg\n Factor of Safety: 1.26\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.30050546936906, + "fos_buckling": 1.2605797564548997, + "fos_yielding": 3.453724459145393, + "deflection": 0.001848094393039315, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.239)" + }, + "parent_node_id": "node_2816", + "improvement_over_parent": null + }, + "node_2818": { + "node_id": "node_2818", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.95 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.94776506182336, + "fos_buckling": 1.4836388735311246, + "fos_yielding": 4.198924801637845, + "deflection": 0.0015216037351434364, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.238)" + }, + "parent_node_id": "node_2817", + "improvement_over_parent": null + }, + "node_2819": { + "node_id": "node_2819", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.10 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1015798001212, + "fos_buckling": 1.5671120752767955, + "fos_yielding": 4.148323833111148, + "deflection": 0.0014514628381577322, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2818", + "improvement_over_parent": null + }, + "node_2820": { + "node_id": "node_2820", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2819", + "improvement_over_parent": null + }, + "node_2821": { + "node_id": "node_2821", + "content": "INITIAL DESIGN (Trace 411)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 158.08 kg\n Factor of Safety: 0.97\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.0756908034192, + "fos_buckling": 0.9714034489684437, + "fos_yielding": 2.7205245840679004, + "deflection": 0.002007452563187267, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2822": { + "node_id": "node_2822", + "content": "MODIFICATION: Increase 4 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 159.75 kg\n Factor of Safety: 0.97\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.75003353939846, + "fos_buckling": 0.9714034489684436, + "fos_yielding": 2.7205245840679, + "deflection": 0.0019997033485752475, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.511)" + }, + "parent_node_id": "node_2821", + "improvement_over_parent": null + }, + "node_2823": { + "node_id": "node_2823", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 164.13 kg\n Factor of Safety: 0.95\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.13141473236925, + "fos_buckling": 0.9495652046215624, + "fos_yielding": 2.6593641252681475, + "deflection": 0.0019199231558563814, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001982)" + }, + "parent_node_id": "node_2822", + "improvement_over_parent": null + }, + "node_2824": { + "node_id": "node_2824", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 171.42 kg\n Factor of Safety: 0.95\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.42248460086978, + "fos_buckling": 0.9520331555717088, + "fos_yielding": 2.6662758994020326, + "deflection": 0.001895401449819853, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002139)" + }, + "parent_node_id": "node_2823", + "improvement_over_parent": null + }, + "node_2825": { + "node_id": "node_2825", + "content": "MODIFICATION: Increase 10 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0029)]\n\nPerformance:\n Mass: 173.62 kg\n Factor of Safety: 0.95\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.62147003219263, + "fos_buckling": 0.9522911118357117, + "fos_yielding": 2.6669983349241417, + "deflection": 0.0018927332055632365, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.335)" + }, + "parent_node_id": "node_2824", + "improvement_over_parent": null + }, + "node_2826": { + "node_id": "node_2826", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n\nPerformance:\n Mass: 205.26 kg\n Factor of Safety: 1.11\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.26026370583534, + "fos_buckling": 1.1108030349342468, + "fos_yielding": 3.1655527643535804, + "deflection": 0.0016029493682950694, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_2825", + "improvement_over_parent": null + }, + "node_2827": { + "node_id": "node_2827", + "content": "MODIFICATION: Increase 6 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0091)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0034)]\n\nPerformance:\n Mass: 226.99 kg\n Factor of Safety: 1.11\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 226.99078898418, + "fos_buckling": 1.1079606308989591, + "fos_yielding": 3.1574525164533327, + "deflection": 0.0014673532470275378, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.582)" + }, + "parent_node_id": "node_2826", + "improvement_over_parent": null + }, + "node_2828": { + "node_id": "node_2828", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2827", + "improvement_over_parent": null + }, + "node_2829": { + "node_id": "node_2829", + "content": "INITIAL DESIGN (Trace 412)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 183.20 kg\n Factor of Safety: 1.33\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.19740811027071, + "fos_buckling": 1.327241404178225, + "fos_yielding": 3.7384046683595926, + "deflection": 0.0017371834467067209, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2830": { + "node_id": "node_2830", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 186.36 kg\n Factor of Safety: 1.28\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.36491367063968, + "fos_buckling": 1.278905692512872, + "fos_yielding": 3.690195727500334, + "deflection": 0.0016774544298302136, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001736)" + }, + "parent_node_id": "node_2829", + "improvement_over_parent": null + }, + "node_2831": { + "node_id": "node_2831", + "content": "MODIFICATION: Increase 5 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0068)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 194.96 kg\n Factor of Safety: 1.28\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.956445680124, + "fos_buckling": 1.278905692512872, + "fos_yielding": 3.690195727500334, + "deflection": 0.0016774544298302136, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.355)" + }, + "parent_node_id": "node_2830", + "improvement_over_parent": null + }, + "node_2832": { + "node_id": "node_2832", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0068)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n\nPerformance:\n Mass: 202.15 kg\n Factor of Safety: 1.26\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 202.14519973525964, + "fos_buckling": 1.2578725024548034, + "fos_yielding": 3.7060295822514466, + "deflection": 0.0016260381621850891, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001704)" + }, + "parent_node_id": "node_2831", + "improvement_over_parent": null + }, + "node_2833": { + "node_id": "node_2833", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0077)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 226.86 kg\n Factor of Safety: 1.40\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 226.85682710952554, + "fos_buckling": 1.4041954144341606, + "fos_yielding": 4.159416683955062, + "deflection": 0.0014502962599991804, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_2832", + "improvement_over_parent": null + }, + "node_2834": { + "node_id": "node_2834", + "content": "MODIFICATION: Increase 9 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0077)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0032)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 228.69 kg\n Factor of Safety: 1.37\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.68876823917876, + "fos_buckling": 1.372179237081834, + "fos_yielding": 4.155625614633333, + "deflection": 0.0014489787533249554, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.603)" + }, + "parent_node_id": "node_2833", + "improvement_over_parent": null + }, + "node_2835": { + "node_id": "node_2835", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2834", + "improvement_over_parent": null + }, + "node_2836": { + "node_id": "node_2836", + "content": "INITIAL DESIGN (Trace 413)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 88.04 kg\n Factor of Safety: 0.22\n Max Deflection: 5.46e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 88.04401876571305, + "fos_buckling": 0.21553519069040294, + "fos_yielding": 1.183792579531005, + "deflection": 54631937202830.484, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2837": { + "node_id": "node_2837", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n\nPerformance:\n Mass: 91.44 kg\n Factor of Safety: 0.04\n Max Deflection: 5.01e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 91.43541221666864, + "fos_buckling": 0.039791414959438935, + "fos_yielding": 0.5512767230240074, + "deflection": 50051147754123.445, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001356)" + }, + "parent_node_id": "node_2836", + "improvement_over_parent": null + }, + "node_2838": { + "node_id": "node_2838", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n\nPerformance:\n Mass: 115.48 kg\n Factor of Safety: 0.87\n Max Deflection: 2.78e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.47563096814608, + "fos_buckling": 0.8749109765140749, + "fos_yielding": 2.315943120948679, + "deflection": 0.0027750947495498624, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003051)" + }, + "parent_node_id": "node_2837", + "improvement_over_parent": null + }, + "node_2839": { + "node_id": "node_2839", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n\nPerformance:\n Mass: 135.24 kg\n Factor of Safety: 1.01\n Max Deflection: 2.38e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.23923452675385, + "fos_buckling": 1.0070061369319332, + "fos_yielding": 2.7116876604606452, + "deflection": 0.0023760325713177077, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_2838", + "improvement_over_parent": null + }, + "node_2840": { + "node_id": "node_2840", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 167.35 kg\n Factor of Safety: 1.21\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.35003402811003, + "fos_buckling": 1.2107698553305897, + "fos_yielding": 3.3542806059731713, + "deflection": 0.0019286386274224388, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_2839", + "improvement_over_parent": null + }, + "node_2841": { + "node_id": "node_2841", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 174.23 kg\n Factor of Safety: 1.12\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.2258787158077, + "fos_buckling": 1.1164805940213351, + "fos_yielding": 3.3083912524576897, + "deflection": 0.0018676576380026164, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002008)" + }, + "parent_node_id": "node_2840", + "improvement_over_parent": null + }, + "node_2842": { + "node_id": "node_2842", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 218.18 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.18170611210545, + "fos_buckling": 1.3248171158794795, + "fos_yielding": 4.139594099484039, + "deflection": 0.0014959395343928175, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.277)" + }, + "parent_node_id": "node_2841", + "improvement_over_parent": null + }, + "node_2843": { + "node_id": "node_2843", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M6: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.35604898883412, + "fos_buckling": 1.5686022896706238, + "fos_yielding": 4.153338507452746, + "deflection": 0.0014497695980564519, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2842", + "improvement_over_parent": null + }, + "node_2844": { + "node_id": "node_2844", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2843", + "improvement_over_parent": null + }, + "node_2845": { + "node_id": "node_2845", + "content": "INITIAL DESIGN (Trace 414)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 135.54 kg\n Factor of Safety: 0.82\n Max Deflection: 2.34e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.5385079412011, + "fos_buckling": 0.8162912461035192, + "fos_yielding": 1.9583727200895538, + "deflection": 0.0023389028202461617, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2846": { + "node_id": "node_2846", + "content": "MODIFICATION: Increase 6 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 143.57 kg\n Factor of Safety: 0.82\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.57131294327237, + "fos_buckling": 0.8162912461035192, + "fos_yielding": 1.9583727200895538, + "deflection": 0.0021991980149867036, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.381)" + }, + "parent_node_id": "node_2845", + "improvement_over_parent": null + }, + "node_2847": { + "node_id": "node_2847", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0027)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n\nPerformance:\n Mass: 146.05 kg\n Factor of Safety: 0.82\n Max Deflection: 2.19e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.05351021846346, + "fos_buckling": 0.8189875825268412, + "fos_yielding": 1.9648415285213767, + "deflection": 0.0021919576393858785, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001336)" + }, + "parent_node_id": "node_2846", + "improvement_over_parent": null + }, + "node_2848": { + "node_id": "node_2848", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0035)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 185.56 kg\n Factor of Safety: 1.02\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.56212755378124, + "fos_buckling": 1.023202317415092, + "fos_yielding": 2.5081457891660848, + "deflection": 0.0017171447597777046, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.292)" + }, + "parent_node_id": "node_2847", + "improvement_over_parent": null + }, + "node_2849": { + "node_id": "node_2849", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 209.32 kg\n Factor of Safety: 1.14\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.32413561014718, + "fos_buckling": 1.1424068102318203, + "fos_yielding": 2.837837669357894, + "deflection": 0.0015176517829504853, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_2848", + "improvement_over_parent": null + }, + "node_2850": { + "node_id": "node_2850", + "content": "MODIFICATION: Increase 8 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0044)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 213.89 kg\n Factor of Safety: 1.14\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.89094258781864, + "fos_buckling": 1.1427721604684236, + "fos_yielding": 2.838745231055404, + "deflection": 0.0015171665817378878, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.418)" + }, + "parent_node_id": "node_2849", + "improvement_over_parent": null + }, + "node_2851": { + "node_id": "node_2851", + "content": "MODIFICATION: Increase 4 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0039)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0044)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 216.69 kg\n Factor of Safety: 1.14\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.6920714248869, + "fos_buckling": 1.1419018212437633, + "fos_yielding": 2.836583232882127, + "deflection": 0.0015183229417347495, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.529)" + }, + "parent_node_id": "node_2850", + "improvement_over_parent": null + }, + "node_2852": { + "node_id": "node_2852", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2851", + "improvement_over_parent": null + }, + "node_2853": { + "node_id": "node_2853", + "content": "INITIAL DESIGN (Trace 415)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 93.04 kg\n Factor of Safety: 1.14\n Max Deflection: 2.22e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 93.04262065744624, + "fos_buckling": 1.13591530915717, + "fos_yielding": 1.08126794842885, + "deflection": 22229748839216.387, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2854": { + "node_id": "node_2854", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 115.67 kg\n Factor of Safety: 0.17\n Max Deflection: 1.18e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.67496058615045, + "fos_buckling": 0.16904451646571952, + "fos_yielding": 2.1625358968577, + "deflection": 11841138123143.596, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.258)" + }, + "parent_node_id": "node_2853", + "improvement_over_parent": null + }, + "node_2855": { + "node_id": "node_2855", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 144.53 kg\n Factor of Safety: 1.06\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.5264282829017, + "fos_buckling": 1.0578630470193398, + "fos_yielding": 2.8420295767961914, + "deflection": 0.002239138315942757, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003744)" + }, + "parent_node_id": "node_2854", + "improvement_over_parent": null + }, + "node_2856": { + "node_id": "node_2856", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 181.21 kg\n Factor of Safety: 1.29\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.20794396430594, + "fos_buckling": 1.2867404124799358, + "fos_yielding": 3.56164519131914, + "deflection": 0.0017888405762520251, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.274)" + }, + "parent_node_id": "node_2855", + "improvement_over_parent": null + }, + "node_2857": { + "node_id": "node_2857", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 184.22 kg\n Factor of Safety: 1.30\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.22358007553376, + "fos_buckling": 1.2954923135631602, + "fos_yielding": 3.5684646228143873, + "deflection": 0.001789272472085892, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001646)" + }, + "parent_node_id": "node_2856", + "improvement_over_parent": null + }, + "node_2858": { + "node_id": "node_2858", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 217.10 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.09721644391777, + "fos_buckling": 1.4840118370992605, + "fos_yielding": 4.202327327924025, + "deflection": 0.0015206535573779494, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.196)" + }, + "parent_node_id": "node_2857", + "improvement_over_parent": null + }, + "node_2859": { + "node_id": "node_2859", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2510311822156, + "fos_buckling": 1.5675287094994061, + "fos_yielding": 4.151676360456442, + "deflection": 0.0014505402839452856, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2858", + "improvement_over_parent": null + }, + "node_2860": { + "node_id": "node_2860", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2859", + "improvement_over_parent": null + }, + "node_2861": { + "node_id": "node_2861", + "content": "INITIAL DESIGN (Trace 416)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0006)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0023)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 107.48 kg\n Factor of Safety: 0.52\n Max Deflection: 3.03e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.47540263245793, + "fos_buckling": 0.5197182522311644, + "fos_yielding": 2.0690431770484454, + "deflection": 0.003033292288551354, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2862": { + "node_id": "node_2862", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 131.28 kg\n Factor of Safety: 0.63\n Max Deflection: 2.49e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.28173094432833, + "fos_buckling": 0.6257957767466836, + "fos_yielding": 2.5255808183537516, + "deflection": 0.002486479365704259, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_2861", + "improvement_over_parent": null + }, + "node_2863": { + "node_id": "node_2863", + "content": "MODIFICATION: Increase 7 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 135.12 kg\n Factor of Safety: 0.89\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.1200001093068, + "fos_buckling": 0.8934777109354417, + "fos_yielding": 2.534769788034088, + "deflection": 0.0023732543823157147, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.178)" + }, + "parent_node_id": "node_2862", + "improvement_over_parent": null + }, + "node_2864": { + "node_id": "node_2864", + "content": "MODIFICATION: Increase 2 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0018)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 135.93 kg\n Factor of Safety: 1.03\n Max Deflection: 2.37e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.93056493312298, + "fos_buckling": 1.0274687992526592, + "fos_yielding": 2.5312983359885672, + "deflection": 0.002369065708640973, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.631)" + }, + "parent_node_id": "node_2863", + "improvement_over_parent": null + }, + "node_2865": { + "node_id": "node_2865", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 160.56 kg\n Factor of Safety: 1.19\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.55599403612055, + "fos_buckling": 1.1892499121341944, + "fos_yielding": 2.988559622414223, + "deflection": 0.0020088346471032366, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.193)" + }, + "parent_node_id": "node_2864", + "improvement_over_parent": null + }, + "node_2866": { + "node_id": "node_2866", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 199.48 kg\n Factor of Safety: 1.43\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.47818925078153, + "fos_buckling": 1.429905960297982, + "fos_yielding": 3.7104743127717756, + "deflection": 0.0016208484287463202, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.263)" + }, + "parent_node_id": "node_2865", + "improvement_over_parent": null + }, + "node_2867": { + "node_id": "node_2867", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2589781156526, + "fos_buckling": 1.5679181748469384, + "fos_yielding": 4.151059174465977, + "deflection": 0.0014503726397266231, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.131)" + }, + "parent_node_id": "node_2866", + "improvement_over_parent": null + }, + "node_2868": { + "node_id": "node_2868", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2867", + "improvement_over_parent": null + }, + "node_2869": { + "node_id": "node_2869", + "content": "INITIAL DESIGN (Trace 417)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 139.38 kg\n Factor of Safety: 0.22\n Max Deflection: 1.75e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.3776680397604, + "fos_buckling": 0.216388147001614, + "fos_yielding": 1.2570036710166101, + "deflection": 17485582444582.137, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2870": { + "node_id": "node_2870", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 177.66 kg\n Factor of Safety: 1.15\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.66453074508954, + "fos_buckling": 1.1537893527297298, + "fos_yielding": 2.870750150491743, + "deflection": 0.001745217371263046, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005007)" + }, + "parent_node_id": "node_2869", + "improvement_over_parent": null + }, + "node_2871": { + "node_id": "node_2871", + "content": "MODIFICATION: Increase 3 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 178.81 kg\n Factor of Safety: 1.15\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.81193272175543, + "fos_buckling": 1.1537893527297298, + "fos_yielding": 2.870750150491743, + "deflection": 0.00174077717113678, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.366)" + }, + "parent_node_id": "node_2870", + "improvement_over_parent": null + }, + "node_2872": { + "node_id": "node_2872", + "content": "MODIFICATION: Increase 0 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 181.65 kg\n Factor of Safety: 1.15\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.64902628340533, + "fos_buckling": 1.1537893527297298, + "fos_yielding": 2.870750150491743, + "deflection": 0.0016714613459100761, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.238)" + }, + "parent_node_id": "node_2871", + "improvement_over_parent": null + }, + "node_2873": { + "node_id": "node_2873", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 189.21 kg\n Factor of Safety: 1.15\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.21046571877324, + "fos_buckling": 1.1507896302561456, + "fos_yielding": 2.863286523164882, + "deflection": 0.0016675970118338094, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002225)" + }, + "parent_node_id": "node_2872", + "improvement_over_parent": null + }, + "node_2874": { + "node_id": "node_2874", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 215.47 kg\n Factor of Safety: 1.29\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.46994432710912, + "fos_buckling": 1.2915025208602067, + "fos_yielding": 3.267408427154842, + "deflection": 0.0014671835183910045, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.152)" + }, + "parent_node_id": "node_2873", + "improvement_over_parent": null + }, + "node_2875": { + "node_id": "node_2875", + "content": "MODIFICATION: Increase 4 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.17 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1677931516218, + "fos_buckling": 1.5673823664382553, + "fos_yielding": 4.15205257746724, + "deflection": 0.0014511455624975757, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.309)" + }, + "parent_node_id": "node_2874", + "improvement_over_parent": null + }, + "node_2876": { + "node_id": "node_2876", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2875", + "improvement_over_parent": null + }, + "node_2877": { + "node_id": "node_2877", + "content": "INITIAL DESIGN (Trace 418)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 110.70 kg\n Factor of Safety: 0.09\n Max Deflection: 7.84e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.70414577842912, + "fos_buckling": 0.08687868381616136, + "fos_yielding": 1.3691214991182328, + "deflection": 0.007838574473399617, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2878": { + "node_id": "node_2878", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n\nPerformance:\n Mass: 127.75 kg\n Factor of Safety: 0.72\n Max Deflection: 2.64e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.7487795389667, + "fos_buckling": 0.724476039885051, + "fos_yielding": 2.408174400065826, + "deflection": 0.0026413613701728065, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002159)" + }, + "parent_node_id": "node_2877", + "improvement_over_parent": null + }, + "node_2879": { + "node_id": "node_2879", + "content": "MODIFICATION: Increase 6 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n\nPerformance:\n Mass: 131.61 kg\n Factor of Safety: 0.68\n Max Deflection: 2.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.60905676450636, + "fos_buckling": 0.6765257634445151, + "fos_yielding": 2.644377396963544, + "deflection": 0.002604849260530925, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.264)" + }, + "parent_node_id": "node_2878", + "improvement_over_parent": null + }, + "node_2880": { + "node_id": "node_2880", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 169.32 kg\n Factor of Safety: 0.84\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.31683827836181, + "fos_buckling": 0.8433567141823359, + "fos_yielding": 3.396542503706533, + "deflection": 0.0020267787682328705, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_2879", + "improvement_over_parent": null + }, + "node_2881": { + "node_id": "node_2881", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 207.75 kg\n Factor of Safety: 1.00\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.75473976339222, + "fos_buckling": 1.0015747011598573, + "fos_yielding": 4.1605038143045485, + "deflection": 0.0016533674197907458, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_2880", + "improvement_over_parent": null + }, + "node_2882": { + "node_id": "node_2882", + "content": "MODIFICATION: Increase 10 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.17942843952315, + "fos_buckling": 1.568090808025217, + "fos_yielding": 4.149453756481074, + "deflection": 0.0014508734416449742, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.621)" + }, + "parent_node_id": "node_2881", + "improvement_over_parent": null + }, + "node_2883": { + "node_id": "node_2883", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2882", + "improvement_over_parent": null + }, + "node_2884": { + "node_id": "node_2884", + "content": "INITIAL DESIGN (Trace 419)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 138.69 kg\n Factor of Safety: 0.60\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.69195598112364, + "fos_buckling": 0.6029261330774461, + "fos_yielding": 2.7208659391141063, + "deflection": 0.002450337633663702, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2885": { + "node_id": "node_2885", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 164.90 kg\n Factor of Safety: 0.70\n Max Deflection: 2.06e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.8997329835874, + "fos_buckling": 0.7010195367553373, + "fos_yielding": 3.2320029307930778, + "deflection": 0.002062645838378542, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_2884", + "improvement_over_parent": null + }, + "node_2886": { + "node_id": "node_2886", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 189.29 kg\n Factor of Safety: 0.79\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.2869156718351, + "fos_buckling": 0.788006403030711, + "fos_yielding": 3.7067095989865475, + "deflection": 0.0017982661111659347, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.160)" + }, + "parent_node_id": "node_2885", + "improvement_over_parent": null + }, + "node_2887": { + "node_id": "node_2887", + "content": "MODIFICATION: Increase 7 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 201.43 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.4259874781186, + "fos_buckling": 1.4414887049122047, + "fos_yielding": 3.746638916747126, + "deflection": 0.0016054010666150394, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.484)" + }, + "parent_node_id": "node_2886", + "improvement_over_parent": null + }, + "node_2888": { + "node_id": "node_2888", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23772268557516, + "fos_buckling": 1.567820768458346, + "fos_yielding": 4.150735359605305, + "deflection": 0.0014505348194295904, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_2887", + "improvement_over_parent": null + }, + "node_2889": { + "node_id": "node_2889", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2888", + "improvement_over_parent": null + }, + "node_2890": { + "node_id": "node_2890", + "content": "INITIAL DESIGN (Trace 420)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 120.31 kg\n Factor of Safety: 0.10\n Max Deflection: 6.89e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 120.30995034233945, + "fos_buckling": 0.09786309849950384, + "fos_yielding": 1.5109332655104497, + "deflection": 0.006892585891600045, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2891": { + "node_id": "node_2891", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 126.56 kg\n Factor of Safety: 0.10\n Max Deflection: 6.83e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 126.563377670218, + "fos_buckling": 0.09779804362463616, + "fos_yielding": 1.5654927769816567, + "deflection": 0.0068329277828077135, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001814)" + }, + "parent_node_id": "node_2890", + "improvement_over_parent": null + }, + "node_2892": { + "node_id": "node_2892", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 141.42 kg\n Factor of Safety: 0.11\n Max Deflection: 6.12e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.4239918418386, + "fos_buckling": 0.10753916584928404, + "fos_yielding": 1.7469491685910647, + "deflection": 0.006120049921326862, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_2891", + "improvement_over_parent": null + }, + "node_2893": { + "node_id": "node_2893", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 167.96 kg\n Factor of Safety: 1.05\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.96193050895164, + "fos_buckling": 1.0549459489945154, + "fos_yielding": 2.886484790452903, + "deflection": 0.0019386165439749356, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003427)" + }, + "parent_node_id": "node_2892", + "improvement_over_parent": null + }, + "node_2894": { + "node_id": "node_2894", + "content": "MODIFICATION: Increase 5 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 168.77 kg\n Factor of Safety: 1.02\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.7742193929991, + "fos_buckling": 1.021709764696758, + "fos_yielding": 2.88425757581021, + "deflection": 0.0019328258730285978, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.209)" + }, + "parent_node_id": "node_2893", + "improvement_over_parent": null + }, + "node_2895": { + "node_id": "node_2895", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 208.22 kg\n Factor of Safety: 1.21\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.22153502491068, + "fos_buckling": 1.2149665812797554, + "fos_yielding": 3.5622823077537142, + "deflection": 0.0015699839750293694, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_2894", + "improvement_over_parent": null + }, + "node_2896": { + "node_id": "node_2896", + "content": "MODIFICATION: Increase 4 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 213.36 kg\n Factor of Safety: 1.25\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.3610699559544, + "fos_buckling": 1.2520301624941812, + "fos_yielding": 4.153700734654187, + "deflection": 0.001560535945606636, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.189)" + }, + "parent_node_id": "node_2895", + "improvement_over_parent": null + }, + "node_2897": { + "node_id": "node_2897", + "content": "MODIFICATION: Increase 10 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.12108305163667, + "fos_buckling": 1.5671370168350767, + "fos_yielding": 4.147719201086937, + "deflection": 0.0014512933332352937, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.326)" + }, + "parent_node_id": "node_2896", + "improvement_over_parent": null + }, + "node_2898": { + "node_id": "node_2898", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2897", + "improvement_over_parent": null + }, + "node_2899": { + "node_id": "node_2899", + "content": "INITIAL DESIGN (Trace 421)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n\nPerformance:\n Mass: 129.46 kg\n Factor of Safety: 0.06\n Max Deflection: 1.42e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.46486592658465, + "fos_buckling": 0.05755091156812384, + "fos_yielding": 0.8111021565803005, + "deflection": 0.014224845957796592, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2900": { + "node_id": "node_2900", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 173.08 kg\n Factor of Safety: 0.13\n Max Deflection: 6.45e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.07592016934535, + "fos_buckling": 0.12801533773858106, + "fos_yielding": 1.4569934539198215, + "deflection": 0.006449219961776212, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_2899", + "improvement_over_parent": null + }, + "node_2901": { + "node_id": "node_2901", + "content": "MODIFICATION: Increase 9 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0069)]\n\nPerformance:\n Mass: 180.39 kg\n Factor of Safety: 0.13\n Max Deflection: 6.36e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.38923583589647, + "fos_buckling": 0.12791615660660216, + "fos_yielding": 1.4558646340252812, + "deflection": 0.00636452466011336, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.188)" + }, + "parent_node_id": "node_2900", + "improvement_over_parent": null + }, + "node_2902": { + "node_id": "node_2902", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0069)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.04 kg\n Factor of Safety: 1.54\n Max Deflection: 1.41e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.04120418726987, + "fos_buckling": 1.5374580061363614, + "fos_yielding": 4.169244449248999, + "deflection": 0.0014081671522249996, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_2901", + "improvement_over_parent": null + }, + "node_2903": { + "node_id": "node_2903", + "content": "MODIFICATION: Increase 5 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0069)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 225.17 kg\n Factor of Safety: 1.54\n Max Deflection: 1.40e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 225.17304952179708, + "fos_buckling": 1.54393646529993, + "fos_yielding": 4.163550483407594, + "deflection": 0.001402253420875493, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.582)" + }, + "parent_node_id": "node_2902", + "improvement_over_parent": null + }, + "node_2904": { + "node_id": "node_2904", + "content": "MODIFICATION: Increase 9 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0105)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 247.94 kg\n Factor of Safety: 1.55\n Max Deflection: 1.29e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 247.93998264613185, + "fos_buckling": 1.5463765120164477, + "fos_yielding": 4.192526220388781, + "deflection": 0.0012920277563215083, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.538)" + }, + "parent_node_id": "node_2903", + "improvement_over_parent": null + }, + "node_2905": { + "node_id": "node_2905", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2904", + "improvement_over_parent": null + }, + "node_2906": { + "node_id": "node_2906", + "content": "INITIAL DESIGN (Trace 422)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2907": { + "node_id": "node_2907", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 156.71 kg\n Factor of Safety: 1.23\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.71304657298754, + "fos_buckling": 1.2309325721738338, + "fos_yielding": 3.414393550538703, + "deflection": 0.0021418243717479762, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001897)" + }, + "parent_node_id": "node_2906", + "improvement_over_parent": null + }, + "node_2908": { + "node_id": "node_2908", + "content": "MODIFICATION: Increase 0 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 161.70 kg\n Factor of Safety: 1.23\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.69773336267502, + "fos_buckling": 1.2302821775492192, + "fos_yielding": 3.414393550538703, + "deflection": 0.001967790977424071, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.558)" + }, + "parent_node_id": "node_2907", + "improvement_over_parent": null + }, + "node_2909": { + "node_id": "node_2909", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 168.70 kg\n Factor of Safety: 1.15\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.70079757034233, + "fos_buckling": 1.1456735782689498, + "fos_yielding": 3.3681232546297886, + "deflection": 0.001913922729313079, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002048)" + }, + "parent_node_id": "node_2908", + "improvement_over_parent": null + }, + "node_2910": { + "node_id": "node_2910", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 207.47 kg\n Factor of Safety: 1.34\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.47310693862192, + "fos_buckling": 1.3434455047475284, + "fos_yielding": 4.13805839339153, + "deflection": 0.0015595132330560716, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.252)" + }, + "parent_node_id": "node_2909", + "improvement_over_parent": null + }, + "node_2911": { + "node_id": "node_2911", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 220.02 kg\n Factor of Safety: 1.50\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 220.02146455871818, + "fos_buckling": 1.4975049438334176, + "fos_yielding": 4.153750212947848, + "deflection": 0.001499994368530149, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2910", + "improvement_over_parent": null + }, + "node_2912": { + "node_id": "node_2912", + "content": "MODIFICATION: Increase 1 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21953092669528, + "fos_buckling": 1.5679727744867207, + "fos_yielding": 4.150981135861324, + "deflection": 0.0014507951148093091, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.245)" + }, + "parent_node_id": "node_2911", + "improvement_over_parent": null + }, + "node_2913": { + "node_id": "node_2913", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2912", + "improvement_over_parent": null + }, + "node_2914": { + "node_id": "node_2914", + "content": "INITIAL DESIGN (Trace 423)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 203.65 kg\n Factor of Safety: 1.18\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.65470124725596, + "fos_buckling": 1.1779793008244106, + "fos_yielding": 4.1951076006080354, + "deflection": 0.0017180487946047436, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2915": { + "node_id": "node_2915", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 207.21 kg\n Factor of Safety: 1.14\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.20910858295397, + "fos_buckling": 1.135584836167123, + "fos_yielding": 4.128377666861191, + "deflection": 0.0016806261290830719, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2914", + "improvement_over_parent": null + }, + "node_2916": { + "node_id": "node_2916", + "content": "MODIFICATION: Increase 10 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n\nPerformance:\n Mass: 208.27 kg\n Factor of Safety: 1.15\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.27041717094528, + "fos_buckling": 1.1530374921917579, + "fos_yielding": 4.124113940076408, + "deflection": 0.001678462906385216, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.340)" + }, + "parent_node_id": "node_2915", + "improvement_over_parent": null + }, + "node_2917": { + "node_id": "node_2917", + "content": "MODIFICATION: Increase 0 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0026)]\n\nPerformance:\n Mass: 214.21 kg\n Factor of Safety: 1.24\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.21353274840027, + "fos_buckling": 1.2406347626557543, + "fos_yielding": 4.1550515659473, + "deflection": 0.0015635082237918224, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.543)" + }, + "parent_node_id": "node_2916", + "improvement_over_parent": null + }, + "node_2918": { + "node_id": "node_2918", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2917", + "improvement_over_parent": null + }, + "node_2919": { + "node_id": "node_2919", + "content": "INITIAL DESIGN (Trace 424)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 135.72 kg\n Factor of Safety: 1.05\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.72022086502474, + "fos_buckling": 1.0518868425483598, + "fos_yielding": 2.8407006117631326, + "deflection": 0.0022367765217012345, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2920": { + "node_id": "node_2920", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n\nPerformance:\n Mass: 142.70 kg\n Factor of Safety: 1.07\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.69982343961996, + "fos_buckling": 1.0651588605428335, + "fos_yielding": 2.850677736339908, + "deflection": 0.002236466141060895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001652)" + }, + "parent_node_id": "node_2919", + "improvement_over_parent": null + }, + "node_2921": { + "node_id": "node_2921", + "content": "MODIFICATION: Increase 8 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n\nPerformance:\n Mass: 148.93 kg\n Factor of Safety: 1.10\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.92670606284804, + "fos_buckling": 1.1001269715163726, + "fos_yielding": 2.844042245014326, + "deflection": 0.0021117758247581825, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.232)" + }, + "parent_node_id": "node_2920", + "improvement_over_parent": null + }, + "node_2922": { + "node_id": "node_2922", + "content": "MODIFICATION: Increase 7 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n\nPerformance:\n Mass: 150.06 kg\n Factor of Safety: 1.10\n Max Deflection: 2.11e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.05746748996137, + "fos_buckling": 1.100372035158223, + "fos_yielding": 2.843546500469553, + "deflection": 0.0021117531245465906, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.401)" + }, + "parent_node_id": "node_2921", + "improvement_over_parent": null + }, + "node_2923": { + "node_id": "node_2923", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 154.23 kg\n Factor of Safety: 1.13\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.2269240563619, + "fos_buckling": 1.13203629371305, + "fos_yielding": 2.8192389266121465, + "deflection": 0.002038007330753156, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001686)" + }, + "parent_node_id": "node_2922", + "improvement_over_parent": null + }, + "node_2924": { + "node_id": "node_2924", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0060)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 196.04 kg\n Factor of Safety: 1.39\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.0371974601526, + "fos_buckling": 1.3908009583694838, + "fos_yielding": 3.583481548813313, + "deflection": 0.0016082248579265587, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.294)" + }, + "parent_node_id": "node_2923", + "improvement_over_parent": null + }, + "node_2925": { + "node_id": "node_2925", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0070)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 227.15 kg\n Factor of Safety: 1.57\n Max Deflection: 1.39e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 227.14674163022337, + "fos_buckling": 1.5701798000061329, + "fos_yielding": 4.1522507631081425, + "deflection": 0.0013911218900078486, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.175)" + }, + "parent_node_id": "node_2924", + "improvement_over_parent": null + }, + "node_2926": { + "node_id": "node_2926", + "content": "MODIFICATION: Increase 8 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0103)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 246.93 kg\n Factor of Safety: 1.57\n Max Deflection: 1.30e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 246.9255499380683, + "fos_buckling": 1.5722476923380402, + "fos_yielding": 4.148093401618374, + "deflection": 0.0012979129488480633, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.462)" + }, + "parent_node_id": "node_2925", + "improvement_over_parent": null + }, + "node_2927": { + "node_id": "node_2927", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2926", + "improvement_over_parent": null + }, + "node_2928": { + "node_id": "node_2928", + "content": "INITIAL DESIGN (Trace 425)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 124.46 kg\n Factor of Safety: 1.14\n Max Deflection: 3.13e+14 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.46180611563315, + "fos_buckling": 1.1368812801749455, + "fos_yielding": 0.2272460372010049, + "deflection": 313023848598650.7, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2929": { + "node_id": "node_2929", + "content": "MODIFICATION: Increase 6 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n\nPerformance:\n Mass: 129.72 kg\n Factor of Safety: 1.36\n Max Deflection: 3.13e+14 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.7196199068525, + "fos_buckling": 1.3627367396270431, + "fos_yielding": 0.2272460372010049, + "deflection": 313023848598650.7, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.284)" + }, + "parent_node_id": "node_2928", + "improvement_over_parent": null + }, + "node_2930": { + "node_id": "node_2930", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 165.04 kg\n Factor of Safety: 1.25\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.0372953388328, + "fos_buckling": 1.2493546177890857, + "fos_yielding": 3.4762700150126955, + "deflection": 0.0018615656712391417, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004648)" + }, + "parent_node_id": "node_2929", + "improvement_over_parent": null + }, + "node_2931": { + "node_id": "node_2931", + "content": "MODIFICATION: Increase 5 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 166.59 kg\n Factor of Safety: 1.25\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.5883687635235, + "fos_buckling": 1.2489439715011532, + "fos_yielding": 3.4762700150126955, + "deflection": 0.0018564088267097845, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.471)" + }, + "parent_node_id": "node_2930", + "improvement_over_parent": null + }, + "node_2932": { + "node_id": "node_2932", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 201.34 kg\n Factor of Safety: 1.46\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.33686564065403, + "fos_buckling": 1.4599898696554217, + "fos_yielding": 4.199377738933289, + "deflection": 0.0015427329319434272, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.229)" + }, + "parent_node_id": "node_2931", + "improvement_over_parent": null + }, + "node_2933": { + "node_id": "node_2933", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 213.89 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 213.88522326075028, + "fos_buckling": 1.5241666051763276, + "fos_yielding": 4.199377738933289, + "deflection": 0.0014690729581692446, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2932", + "improvement_over_parent": null + }, + "node_2934": { + "node_id": "node_2934", + "content": "MODIFICATION: Increase 2 thickness by 37%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 214.78 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.78241229586425, + "fos_buckling": 1.5240222962166843, + "fos_yielding": 4.199138359533431, + "deflection": 0.0014692050663059177, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.370)" + }, + "parent_node_id": "node_2933", + "improvement_over_parent": null + }, + "node_2935": { + "node_id": "node_2935", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.40 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3955169106249, + "fos_buckling": 1.5689371769545832, + "fos_yielding": 4.153990305047003, + "deflection": 0.0014494939630216508, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_2934", + "improvement_over_parent": null + }, + "node_2936": { + "node_id": "node_2936", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2935", + "improvement_over_parent": null + }, + "node_2937": { + "node_id": "node_2937", + "content": "INITIAL DESIGN (Trace 426)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 145.42 kg\n Factor of Safety: 0.85\n Max Deflection: 2.17e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.42151896047437, + "fos_buckling": 0.8471382599158239, + "fos_yielding": 2.2443340878274207, + "deflection": 0.0021687285111369366, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2938": { + "node_id": "node_2938", + "content": "MODIFICATION: Increase 4 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 152.20 kg\n Factor of Safety: 0.78\n Max Deflection: 2.14e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.1997480731111, + "fos_buckling": 0.7826155204542814, + "fos_yielding": 2.350375853196294, + "deflection": 0.0021364172244366176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.383)" + }, + "parent_node_id": "node_2937", + "improvement_over_parent": null + }, + "node_2939": { + "node_id": "node_2939", + "content": "MODIFICATION: Increase 0 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 155.68 kg\n Factor of Safety: 0.85\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 155.68471333046614, + "fos_buckling": 0.8481449500119868, + "fos_yielding": 2.347015993132192, + "deflection": 0.002022298699456231, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.385)" + }, + "parent_node_id": "node_2938", + "improvement_over_parent": null + }, + "node_2940": { + "node_id": "node_2940", + "content": "MODIFICATION: Increase 6 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 163.42 kg\n Factor of Safety: 1.21\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.42177230447462, + "fos_buckling": 1.2076055074245655, + "fos_yielding": 3.042132821699179, + "deflection": 0.0019740436241987057, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.567)" + }, + "parent_node_id": "node_2939", + "improvement_over_parent": null + }, + "node_2941": { + "node_id": "node_2941", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 183.75 kg\n Factor of Safety: 1.33\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.75066632277216, + "fos_buckling": 1.334886008401805, + "fos_yielding": 3.4193155975023544, + "deflection": 0.0017579037293876142, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_2940", + "improvement_over_parent": null + }, + "node_2942": { + "node_id": "node_2942", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.57 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.56950045749105, + "fos_buckling": 1.5696882969203374, + "fos_yielding": 4.157320437707697, + "deflection": 0.0014484419189542033, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.238)" + }, + "parent_node_id": "node_2941", + "improvement_over_parent": null + }, + "node_2943": { + "node_id": "node_2943", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2942", + "improvement_over_parent": null + }, + "node_2944": { + "node_id": "node_2944", + "content": "INITIAL DESIGN (Trace 427)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 136.56 kg\n Factor of Safety: 1.03\n Max Deflection: 2.31e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.56372254022824, + "fos_buckling": 1.0328458205313493, + "fos_yielding": 2.790042392793048, + "deflection": 0.0023083654033378286, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2945": { + "node_id": "node_2945", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 173.94 kg\n Factor of Safety: 1.27\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.93576796222203, + "fos_buckling": 1.270980482105755, + "fos_yielding": 3.551131259705098, + "deflection": 0.001821927348143017, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_2944", + "improvement_over_parent": null + }, + "node_2946": { + "node_id": "node_2946", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n\nPerformance:\n Mass: 178.78 kg\n Factor of Safety: 1.27\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.78434408293998, + "fos_buckling": 1.270328311824881, + "fos_yielding": 3.511317999677913, + "deflection": 0.001771395863982514, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001386)" + }, + "parent_node_id": "node_2945", + "improvement_over_parent": null + }, + "node_2947": { + "node_id": "node_2947", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 211.42 kg\n Factor of Safety: 1.46\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.41600539847235, + "fos_buckling": 1.457437724100256, + "fos_yielding": 4.148182358671377, + "deflection": 0.0015018771761320406, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_2946", + "improvement_over_parent": null + }, + "node_2948": { + "node_id": "node_2948", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 216.59 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 216.59034827520102, + "fos_buckling": 1.5532917328805003, + "fos_yielding": 4.158049840847696, + "deflection": 0.0014605915146722022, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_2947", + "improvement_over_parent": null + }, + "node_2949": { + "node_id": "node_2949", + "content": "MODIFICATION: Increase 9 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0025)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 219.11 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.1075581671033, + "fos_buckling": 1.5514223206180797, + "fos_yielding": 4.150140897096696, + "deflection": 0.0014572343049049396, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.477)" + }, + "parent_node_id": "node_2948", + "improvement_over_parent": null + }, + "node_2950": { + "node_id": "node_2950", + "content": "MODIFICATION: Increase 8 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0088)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0025)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 239.02 kg\n Factor of Safety: 1.51\n Max Deflection: 1.33e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 239.0169462649566, + "fos_buckling": 1.5059905656254524, + "fos_yielding": 4.144169533022687, + "deflection": 0.0013288070669108434, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.543)" + }, + "parent_node_id": "node_2949", + "improvement_over_parent": null + }, + "node_2951": { + "node_id": "node_2951", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2950", + "improvement_over_parent": null + }, + "node_2952": { + "node_id": "node_2952", + "content": "INITIAL DESIGN (Trace 428)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 95.95 kg\n Factor of Safety: 0.05\n Max Deflection: 1.53e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 95.9480252732868, + "fos_buckling": 0.047207936321927324, + "fos_yielding": 0.9225789938936751, + "deflection": 0.015276145605931565, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2953": { + "node_id": "node_2953", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n\nPerformance:\n Mass: 128.32 kg\n Factor of Safety: 0.10\n Max Deflection: 6.78e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.31525574635836, + "fos_buckling": 0.09966089712183694, + "fos_yielding": 1.5997547000179388, + "deflection": 0.006780551028501306, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004179)" + }, + "parent_node_id": "node_2952", + "improvement_over_parent": null + }, + "node_2954": { + "node_id": "node_2954", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 159.97 kg\n Factor of Safety: 0.96\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.97303793077782, + "fos_buckling": 0.9628087210330161, + "fos_yielding": 2.6980489785157196, + "deflection": 0.0019777661812258665, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004133)" + }, + "parent_node_id": "node_2953", + "improvement_over_parent": null + }, + "node_2955": { + "node_id": "node_2955", + "content": "MODIFICATION: Increase 6 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 165.69 kg\n Factor of Safety: 1.22\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.68913352853372, + "fos_buckling": 1.2221910368282602, + "fos_yielding": 3.0843775214637597, + "deflection": 0.0019471586920959513, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.362)" + }, + "parent_node_id": "node_2954", + "improvement_over_parent": null + }, + "node_2956": { + "node_id": "node_2956", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 196.73 kg\n Factor of Safety: 1.41\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.7261273188319, + "fos_buckling": 1.413655042801072, + "fos_yielding": 3.660108777000153, + "deflection": 0.0016431774875083518, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.203)" + }, + "parent_node_id": "node_2955", + "improvement_over_parent": null + }, + "node_2957": { + "node_id": "node_2957", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22584752501285, + "fos_buckling": 1.5678990714802221, + "fos_yielding": 4.151167572132028, + "deflection": 0.0014505324915732184, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.148)" + }, + "parent_node_id": "node_2956", + "improvement_over_parent": null + }, + "node_2958": { + "node_id": "node_2958", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2957", + "improvement_over_parent": null + }, + "node_2959": { + "node_id": "node_2959", + "content": "INITIAL DESIGN (Trace 429)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 181.19 kg\n Factor of Safety: 0.95\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.18627549926796, + "fos_buckling": 0.9454667805339356, + "fos_yielding": 3.628994498946652, + "deflection": 0.0017123079203377398, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2960": { + "node_id": "node_2960", + "content": "MODIFICATION: Increase 5 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 182.28 kg\n Factor of Safety: 0.92\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.28320909107748, + "fos_buckling": 0.9197384178543466, + "fos_yielding": 3.6278597698140516, + "deflection": 0.0017118038123345037, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.277)" + }, + "parent_node_id": "node_2959", + "improvement_over_parent": null + }, + "node_2961": { + "node_id": "node_2961", + "content": "MODIFICATION: Increase 3 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 183.13 kg\n Factor of Safety: 0.92\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.12615914296708, + "fos_buckling": 0.9194905257522745, + "fos_yielding": 3.6278485314111437, + "deflection": 0.0017119504642278283, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.248)" + }, + "parent_node_id": "node_2960", + "improvement_over_parent": null + }, + "node_2962": { + "node_id": "node_2962", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 194.10 kg\n Factor of Safety: 1.21\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.10219591537364, + "fos_buckling": 1.2127226211231938, + "fos_yielding": 3.637958819888541, + "deflection": 0.0016583631668848292, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002675)" + }, + "parent_node_id": "node_2961", + "improvement_over_parent": null + }, + "node_2963": { + "node_id": "node_2963", + "content": "MODIFICATION: Increase 2 thickness by 65%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 195.27 kg\n Factor of Safety: 1.40\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.27372422081154, + "fos_buckling": 1.4048617877116114, + "fos_yielding": 3.632727828028121, + "deflection": 0.0016553976502135337, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.653)" + }, + "parent_node_id": "node_2962", + "improvement_over_parent": null + }, + "node_2964": { + "node_id": "node_2964", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1797226075963, + "fos_buckling": 1.5675404046046597, + "fos_yielding": 4.149802905668149, + "deflection": 0.0014509577050618157, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.157)" + }, + "parent_node_id": "node_2963", + "improvement_over_parent": null + }, + "node_2965": { + "node_id": "node_2965", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2964", + "improvement_over_parent": null + }, + "node_2966": { + "node_id": "node_2966", + "content": "INITIAL DESIGN (Trace 430)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 135.14 kg\n Factor of Safety: 0.08\n Max Deflection: 2.13e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.14372112064112, + "fos_buckling": 0.07625439814118982, + "fos_yielding": 1.0298943270624783, + "deflection": 21327310740627.895, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2967": { + "node_id": "node_2967", + "content": "MODIFICATION: Increase 6 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 136.93 kg\n Factor of Safety: 0.01\n Max Deflection: 1.55e+14 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.93421104408796, + "fos_buckling": 0.01224713979588028, + "fos_yielding": 0.2328744068556571, + "deflection": 155448153182069.75, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.376)" + }, + "parent_node_id": "node_2966", + "improvement_over_parent": null + }, + "node_2968": { + "node_id": "node_2968", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 153.98 kg\n Factor of Safety: 0.13\n Max Deflection: 7.11e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.98406789224717, + "fos_buckling": 0.13103239176206877, + "fos_yielding": 2.1625358968577, + "deflection": 7106280538813.362, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_2967", + "improvement_over_parent": null + }, + "node_2969": { + "node_id": "node_2969", + "content": "MODIFICATION: Increase 1 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 158.67 kg\n Factor of Safety: 0.22\n Max Deflection: 6.95e+12 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.67483905198372, + "fos_buckling": 0.2164820138922184, + "fos_yielding": 3.6663151118445794, + "deflection": 6952501830655.108, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.458)" + }, + "parent_node_id": "node_2968", + "improvement_over_parent": null + }, + "node_2970": { + "node_id": "node_2970", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n\nPerformance:\n Mass: 197.97 kg\n Factor of Safety: 1.40\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 197.9675284687995, + "fos_buckling": 1.3985411469032167, + "fos_yielding": 3.7812730421956204, + "deflection": 0.0016297635835474881, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005150)" + }, + "parent_node_id": "node_2969", + "improvement_over_parent": null + }, + "node_2971": { + "node_id": "node_2971", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 219.76 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.76439834555322, + "fos_buckling": 1.5226777419646076, + "fos_yielding": 4.196446926246813, + "deflection": 0.0014702924963725592, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.121)" + }, + "parent_node_id": "node_2970", + "improvement_over_parent": null + }, + "node_2972": { + "node_id": "node_2972", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31880568125123, + "fos_buckling": 1.5684581590533784, + "fos_yielding": 4.152665617732716, + "deflection": 0.001450111364451185, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2971", + "improvement_over_parent": null + }, + "node_2973": { + "node_id": "node_2973", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2972", + "improvement_over_parent": null + }, + "node_2974": { + "node_id": "node_2974", + "content": "INITIAL DESIGN (Trace 431)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 149.65 kg\n Factor of Safety: 0.02\n Max Deflection: 5.41e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.65067545259006, + "fos_buckling": 0.016399421045758977, + "fos_yielding": 0.2703169871072125, + "deflection": 54110494554146.66, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2975": { + "node_id": "node_2975", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 167.39 kg\n Factor of Safety: 0.13\n Max Deflection: 3.94e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.38858477404105, + "fos_buckling": 0.1287398060229262, + "fos_yielding": 2.1625358968577, + "deflection": 3940786524216.0806, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.130)" + }, + "parent_node_id": "node_2974", + "improvement_over_parent": null + }, + "node_2976": { + "node_id": "node_2976", + "content": "MODIFICATION: Increase 1 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 170.87 kg\n Factor of Safety: 0.13\n Max Deflection: 4.10e+12 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.87065812592303, + "fos_buckling": 0.1287398060229262, + "fos_yielding": 2.1625358968577, + "deflection": 4096008798178.453, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.272)" + }, + "parent_node_id": "node_2975", + "improvement_over_parent": null + }, + "node_2977": { + "node_id": "node_2977", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 174.43 kg\n Factor of Safety: 0.06\n Max Deflection: 9.62e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.42506546162105, + "fos_buckling": 0.06042605170371432, + "fos_yielding": 1.495614411844957, + "deflection": 0.00962399877220632, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_2976", + "improvement_over_parent": null + }, + "node_2978": { + "node_id": "node_2978", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.08 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.07703381299444, + "fos_buckling": 1.4845942123923628, + "fos_yielding": 4.201387824326802, + "deflection": 0.0015207290341550394, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_2977", + "improvement_over_parent": null + }, + "node_2979": { + "node_id": "node_2979", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23084855129227, + "fos_buckling": 1.5681049702436454, + "fos_yielding": 4.150766217662786, + "deflection": 0.0014506415433111221, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_2978", + "improvement_over_parent": null + }, + "node_2980": { + "node_id": "node_2980", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2979", + "improvement_over_parent": null + }, + "node_2981": { + "node_id": "node_2981", + "content": "INITIAL DESIGN (Trace 432)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 135.59 kg\n Factor of Safety: 0.99\n Max Deflection: 2.43e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 135.59295735117865, + "fos_buckling": 0.9934153953594712, + "fos_yielding": 2.628825595204334, + "deflection": 0.002425358747532766, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2982": { + "node_id": "node_2982", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n\nPerformance:\n Mass: 138.28 kg\n Factor of Safety: 0.94\n Max Deflection: 2.32e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 138.27801459947608, + "fos_buckling": 0.9365777969346193, + "fos_yielding": 2.600285299836966, + "deflection": 0.002323083058443019, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001063)" + }, + "parent_node_id": "node_2981", + "improvement_over_parent": null + }, + "node_2983": { + "node_id": "node_2983", + "content": "MODIFICATION: Increase 5 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n\nPerformance:\n Mass: 146.28 kg\n Factor of Safety: 0.73\n Max Deflection: 2.29e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.27834583755288, + "fos_buckling": 0.7344080766108594, + "fos_yielding": 2.6050605192928, + "deflection": 0.0022942999883458983, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.456)" + }, + "parent_node_id": "node_2982", + "improvement_over_parent": null + }, + "node_2984": { + "node_id": "node_2984", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0064)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n\nPerformance:\n Mass: 183.83 kg\n Factor of Safety: 0.92\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.82852382578, + "fos_buckling": 0.9190441898148216, + "fos_yielding": 3.2755991345591515, + "deflection": 0.001827554310686674, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.277)" + }, + "parent_node_id": "node_2983", + "improvement_over_parent": null + }, + "node_2985": { + "node_id": "node_2985", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0083)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 233.48 kg\n Factor of Safety: 1.16\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 233.4771845411185, + "fos_buckling": 1.1609534765158125, + "fos_yielding": 4.16385349697102, + "deflection": 0.0014407549077049939, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.299)" + }, + "parent_node_id": "node_2984", + "improvement_over_parent": null + }, + "node_2986": { + "node_id": "node_2986", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2985", + "improvement_over_parent": null + }, + "node_2987": { + "node_id": "node_2987", + "content": "INITIAL DESIGN (Trace 433)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 189.06 kg\n Factor of Safety: 1.17\n Max Deflection: 1.67e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.06299975246768, + "fos_buckling": 1.1673158597296982, + "fos_yielding": 2.9100808975713988, + "deflection": 0.0016654025101067236, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2988": { + "node_id": "node_2988", + "content": "MODIFICATION: Increase 4 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 195.47 kg\n Factor of Safety: 1.39\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.4716551445429, + "fos_buckling": 1.3902709121932888, + "fos_yielding": 3.6489988441454613, + "deflection": 0.0016494413571277403, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.285)" + }, + "parent_node_id": "node_2987", + "improvement_over_parent": null + }, + "node_2989": { + "node_id": "node_2989", + "content": "MODIFICATION: Increase 2 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 196.14 kg\n Factor of Safety: 1.41\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.13874380535762, + "fos_buckling": 1.410230121573949, + "fos_yielding": 3.6464318042798345, + "deflection": 0.0016480266523881482, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.294)" + }, + "parent_node_id": "node_2988", + "improvement_over_parent": null + }, + "node_2990": { + "node_id": "node_2990", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27346582178933, + "fos_buckling": 1.5682677811827985, + "fos_yielding": 4.148923636217986, + "deflection": 0.0014502182254675581, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.152)" + }, + "parent_node_id": "node_2989", + "improvement_over_parent": null + }, + "node_2991": { + "node_id": "node_2991", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2990", + "improvement_over_parent": null + }, + "node_2992": { + "node_id": "node_2992", + "content": "INITIAL DESIGN (Trace 434)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 160.99 kg\n Factor of Safety: 1.19\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 160.98661956838734, + "fos_buckling": 1.189490070507974, + "fos_yielding": 3.248306451116468, + "deflection": 0.0019146785654424788, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2993": { + "node_id": "node_2993", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 205.80 kg\n Factor of Safety: 1.46\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.79569160815078, + "fos_buckling": 1.4578435172943813, + "fos_yielding": 4.147318492596409, + "deflection": 0.0015027667644757481, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.305)" + }, + "parent_node_id": "node_2992", + "improvement_over_parent": null + }, + "node_2994": { + "node_id": "node_2994", + "content": "MODIFICATION: Increase 5 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 207.90 kg\n Factor of Safety: 1.46\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.9022000825932, + "fos_buckling": 1.4571948931701233, + "fos_yielding": 4.144974828971884, + "deflection": 0.001502009489280458, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.572)" + }, + "parent_node_id": "node_2993", + "improvement_over_parent": null + }, + "node_2995": { + "node_id": "node_2995", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 220.45 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.45055770268945, + "fos_buckling": 1.5660638661672892, + "fos_yielding": 4.1561748613255975, + "deflection": 0.001454630473346897, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_2994", + "improvement_over_parent": null + }, + "node_2996": { + "node_id": "node_2996", + "content": "MODIFICATION: Increase 8 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.10 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.10023997476978, + "fos_buckling": 1.567114433082192, + "fos_yielding": 4.148392316477799, + "deflection": 0.00145147327978563, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.488)" + }, + "parent_node_id": "node_2995", + "improvement_over_parent": null + }, + "node_2997": { + "node_id": "node_2997", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_2996", + "improvement_over_parent": null + }, + "node_2998": { + "node_id": "node_2998", + "content": "INITIAL DESIGN (Trace 435)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0026)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 102.80 kg\n Factor of Safety: 0.77\n Max Deflection: 3.19e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 102.80413453299661, + "fos_buckling": 0.7734993463412572, + "fos_yielding": 1.9945022125521779, + "deflection": 0.003194025187627237, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_2999": { + "node_id": "node_2999", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 115.97 kg\n Factor of Safety: 0.86\n Max Deflection: 2.83e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.96982811931795, + "fos_buckling": 0.8633510092259676, + "fos_yielding": 2.249307089549032, + "deflection": 0.002833157532124831, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.134)" + }, + "parent_node_id": "node_2998", + "improvement_over_parent": null + }, + "node_3000": { + "node_id": "node_3000", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 137.92 kg\n Factor of Safety: 1.01\n Max Deflection: 2.38e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.92473367116773, + "fos_buckling": 1.0085642457892092, + "fos_yielding": 2.6739022010171625, + "deflection": 0.0023846143960053, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.200)" + }, + "parent_node_id": "node_2999", + "improvement_over_parent": null + }, + "node_3001": { + "node_id": "node_3001", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 173.75 kg\n Factor of Safety: 1.23\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.75284975447875, + "fos_buckling": 1.2331654754754873, + "fos_yielding": 3.36595658537903, + "deflection": 0.0018960636374240846, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.279)" + }, + "parent_node_id": "node_3000", + "improvement_over_parent": null + }, + "node_3002": { + "node_id": "node_3002", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 178.68 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.6773151856785, + "fos_buckling": 1.3036649937181464, + "fos_yielding": 3.3250278136323317, + "deflection": 0.0018072508321563168, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002014)" + }, + "parent_node_id": "node_3001", + "improvement_over_parent": null + }, + "node_3003": { + "node_id": "node_3003", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26932387553444, + "fos_buckling": 1.5680695903253798, + "fos_yielding": 4.1515380417428265, + "deflection": 0.0014503714664982179, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.274)" + }, + "parent_node_id": "node_3002", + "improvement_over_parent": null + }, + "node_3004": { + "node_id": "node_3004", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3003", + "improvement_over_parent": null + }, + "node_3005": { + "node_id": "node_3005", + "content": "INITIAL DESIGN (Trace 436)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 125.94 kg\n Factor of Safety: 0.86\n Max Deflection: 2.55e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.93601303207686, + "fos_buckling": 0.8625273089116735, + "fos_yielding": 2.3679143025523812, + "deflection": 0.0025489445662238153, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3006": { + "node_id": "node_3006", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 146.39 kg\n Factor of Safety: 1.00\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.39401327003935, + "fos_buckling": 0.9982758475721825, + "fos_yielding": 2.751380231489949, + "deflection": 0.0021954865794863374, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.172)" + }, + "parent_node_id": "node_3005", + "improvement_over_parent": null + }, + "node_3007": { + "node_id": "node_3007", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 178.01 kg\n Factor of Safety: 1.21\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.01448352275594, + "fos_buckling": 1.2054858791575402, + "fos_yielding": 3.3434075349880827, + "deflection": 0.0018090014894603056, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.232)" + }, + "parent_node_id": "node_3006", + "improvement_over_parent": null + }, + "node_3008": { + "node_id": "node_3008", + "content": "MODIFICATION: Increase 5 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 179.43 kg\n Factor of Safety: 1.31\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.43090142957394, + "fos_buckling": 1.308332093003821, + "fos_yielding": 3.3389920858883726, + "deflection": 0.001799749445798564, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.431)" + }, + "parent_node_id": "node_3007", + "improvement_over_parent": null + }, + "node_3009": { + "node_id": "node_3009", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.07 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.06979953869157, + "fos_buckling": 1.5669387433177, + "fos_yielding": 4.147825561990144, + "deflection": 0.0014516531162640277, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.267)" + }, + "parent_node_id": "node_3008", + "improvement_over_parent": null + }, + "node_3010": { + "node_id": "node_3010", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3009", + "improvement_over_parent": null + }, + "node_3011": { + "node_id": "node_3011", + "content": "INITIAL DESIGN (Trace 437)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3012": { + "node_id": "node_3012", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 219.70 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.70417735852303, + "fos_buckling": 1.5224257584192258, + "fos_yielding": 4.195107472363622, + "deflection": 0.0014706252204524392, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_3011", + "improvement_over_parent": null + }, + "node_3013": { + "node_id": "node_3013", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25858469422104, + "fos_buckling": 1.5680097193854248, + "fos_yielding": 4.1513431428331, + "deflection": 0.0014504397253500814, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_3012", + "improvement_over_parent": null + }, + "node_3014": { + "node_id": "node_3014", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3013", + "improvement_over_parent": null + }, + "node_3015": { + "node_id": "node_3015", + "content": "INITIAL DESIGN (Trace 438)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 125.77 kg\n Factor of Safety: 0.09\n Max Deflection: 6.92e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.77366426978793, + "fos_buckling": 0.09430072186400502, + "fos_yielding": 1.5018513968605691, + "deflection": 0.006924798607625782, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3016": { + "node_id": "node_3016", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 158.87 kg\n Factor of Safety: 0.12\n Max Deflection: 5.49e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.8673388961704, + "fos_buckling": 0.11510972962552322, + "fos_yielding": 1.8925476863572213, + "deflection": 0.005492122698580599, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.285)" + }, + "parent_node_id": "node_3015", + "improvement_over_parent": null + }, + "node_3017": { + "node_id": "node_3017", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 180.70 kg\n Factor of Safety: 0.13\n Max Deflection: 4.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.69990116412956, + "fos_buckling": 0.12793643554539974, + "fos_yielding": 2.1492909432369345, + "deflection": 0.004834253623471406, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.151)" + }, + "parent_node_id": "node_3016", + "improvement_over_parent": null + }, + "node_3018": { + "node_id": "node_3018", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.35 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.35186951550295, + "fos_buckling": 1.568166541406689, + "fos_yielding": 4.153444372643242, + "deflection": 0.001449891877714198, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3017", + "improvement_over_parent": null + }, + "node_3019": { + "node_id": "node_3019", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3018", + "improvement_over_parent": null + }, + "node_3020": { + "node_id": "node_3020", + "content": "INITIAL DESIGN (Trace 439)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 140.59 kg\n Factor of Safety: 0.03\n Max Deflection: 3.48e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.59356401688257, + "fos_buckling": 0.0328759544816391, + "fos_yielding": 0.540633974214425, + "deflection": 34843857589518.906, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3021": { + "node_id": "node_3021", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n\nPerformance:\n Mass: 179.00 kg\n Factor of Safety: 1.33\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.00025545168438, + "fos_buckling": 1.326231253529051, + "fos_yielding": 3.6973139858933104, + "deflection": 0.0017941468684741062, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005024)" + }, + "parent_node_id": "node_3020", + "improvement_over_parent": null + }, + "node_3022": { + "node_id": "node_3022", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 203.17 kg\n Factor of Safety: 1.47\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 203.17125279769127, + "fos_buckling": 1.4724014743636278, + "fos_yielding": 4.194158449895645, + "deflection": 0.0015822531054748793, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.148)" + }, + "parent_node_id": "node_3021", + "improvement_over_parent": null + }, + "node_3023": { + "node_id": "node_3023", + "content": "MODIFICATION: Increase 0 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 206.38 kg\n Factor of Safety: 1.47\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.37543075873685, + "fos_buckling": 1.4729050080583774, + "fos_yielding": 4.194158449895645, + "deflection": 0.0015215661475512685, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.239)" + }, + "parent_node_id": "node_3022", + "improvement_over_parent": null + }, + "node_3024": { + "node_id": "node_3024", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 214.99 kg\n Factor of Safety: 1.48\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.9885353734975, + "fos_buckling": 1.4828216360385045, + "fos_yielding": 4.199070158257451, + "deflection": 0.001521454412599088, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_3023", + "improvement_over_parent": null + }, + "node_3025": { + "node_id": "node_3025", + "content": "MODIFICATION: Increase 8 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0070)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.06 kg\n Factor of Safety: 1.49\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 223.05854847971432, + "fos_buckling": 1.4948856418255112, + "fos_yielding": 4.210208161873701, + "deflection": 0.0014468335874602766, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.208)" + }, + "parent_node_id": "node_3024", + "improvement_over_parent": null + }, + "node_3026": { + "node_id": "node_3026", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0070)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 229.21 kg\n Factor of Safety: 1.56\n Max Deflection: 1.39e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 229.21236321801214, + "fos_buckling": 1.5622987845604612, + "fos_yielding": 4.16469698552372, + "deflection": 0.0013904919232203478, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_3025", + "improvement_over_parent": null + }, + "node_3027": { + "node_id": "node_3027", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3026", + "improvement_over_parent": null + }, + "node_3028": { + "node_id": "node_3028", + "content": "INITIAL DESIGN (Trace 440)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3029": { + "node_id": "node_3029", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 159.26 kg\n Factor of Safety: 1.19\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.26314842704997, + "fos_buckling": 1.1857608848970687, + "fos_yielding": 3.2706846956313904, + "deflection": 0.0020377311569076645, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001812)" + }, + "parent_node_id": "node_3028", + "improvement_over_parent": null + }, + "node_3030": { + "node_id": "node_3030", + "content": "MODIFICATION: Increase 0 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 161.42 kg\n Factor of Safety: 1.19\n Max Deflection: 1.97e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.41550716265948, + "fos_buckling": 1.185490404084468, + "fos_yielding": 3.2706846956313904, + "deflection": 0.0019743758188450343, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.195)" + }, + "parent_node_id": "node_3029", + "improvement_over_parent": null + }, + "node_3031": { + "node_id": "node_3031", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 164.19 kg\n Factor of Safety: 1.10\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.1853442578907, + "fos_buckling": 1.1048715853972833, + "fos_yielding": 3.2272543151303323, + "deflection": 0.0019134597762727984, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001502)" + }, + "parent_node_id": "node_3030", + "improvement_over_parent": null + }, + "node_3032": { + "node_id": "node_3032", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 173.96 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.96120929286062, + "fos_buckling": 1.2742562534520885, + "fos_yielding": 3.2374572514870312, + "deflection": 0.001855588931405819, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002361)" + }, + "parent_node_id": "node_3031", + "improvement_over_parent": null + }, + "node_3033": { + "node_id": "node_3033", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24885299990655, + "fos_buckling": 1.5679119036886582, + "fos_yielding": 4.151058397811525, + "deflection": 0.0014504231015688865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_3032", + "improvement_over_parent": null + }, + "node_3034": { + "node_id": "node_3034", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3033", + "improvement_over_parent": null + }, + "node_3035": { + "node_id": "node_3035", + "content": "INITIAL DESIGN (Trace 441)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 131.18 kg\n Factor of Safety: 0.76\n Max Deflection: 2.49e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.18133890075418, + "fos_buckling": 0.7577499995143302, + "fos_yielding": 2.7723454648444754, + "deflection": 0.002494731278808199, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3036": { + "node_id": "node_3036", + "content": "MODIFICATION: Increase 5 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 132.18 kg\n Factor of Safety: 0.72\n Max Deflection: 2.48e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 132.1812812081048, + "fos_buckling": 0.7162010788504699, + "fos_yielding": 2.7723454648444754, + "deflection": 0.0024847131553127587, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.346)" + }, + "parent_node_id": "node_3035", + "improvement_over_parent": null + }, + "node_3037": { + "node_id": "node_3037", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 152.88 kg\n Factor of Safety: 0.81\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.8805817404579, + "fos_buckling": 0.813152988057247, + "fos_yielding": 3.204121998648116, + "deflection": 0.0021499807587300793, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_3036", + "improvement_over_parent": null + }, + "node_3038": { + "node_id": "node_3038", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 159.45 kg\n Factor of Safety: 0.84\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.44954575403034, + "fos_buckling": 0.8426371415436568, + "fos_yielding": 3.1783666828262236, + "deflection": 0.0021321225091671587, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001912)" + }, + "parent_node_id": "node_3037", + "improvement_over_parent": null + }, + "node_3039": { + "node_id": "node_3039", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 185.43 kg\n Factor of Safety: 0.96\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.43391762341403, + "fos_buckling": 0.9583507247166458, + "fos_yielding": 3.6922629417862636, + "deflection": 0.001834825290738211, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_3038", + "improvement_over_parent": null + }, + "node_3040": { + "node_id": "node_3040", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 209.18 kg\n Factor of Safety: 1.06\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.1778512325721, + "fos_buckling": 1.0590326452341892, + "fos_yielding": 4.160753651633887, + "deflection": 0.0016277010963315626, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_3039", + "improvement_over_parent": null + }, + "node_3041": { + "node_id": "node_3041", + "content": "MODIFICATION: Increase 10 thickness by 54%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0039)]\n\nPerformance:\n Mass: 213.16 kg\n Factor of Safety: 1.06\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.16187555052934, + "fos_buckling": 1.0642427478854954, + "fos_yielding": 4.154167793284949, + "deflection": 0.001625659657456065, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.538)" + }, + "parent_node_id": "node_3040", + "improvement_over_parent": null + }, + "node_3042": { + "node_id": "node_3042", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3041", + "improvement_over_parent": null + }, + "node_3043": { + "node_id": "node_3043", + "content": "INITIAL DESIGN (Trace 442)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 188.58 kg\n Factor of Safety: 1.36\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.58137846627918, + "fos_buckling": 1.359719423415251, + "fos_yielding": 3.6535868496247934, + "deflection": 0.0016930546485597853, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3044": { + "node_id": "node_3044", + "content": "MODIFICATION: Increase 8 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 191.27 kg\n Factor of Safety: 1.36\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.26745430864355, + "fos_buckling": 1.3593333504601537, + "fos_yielding": 3.6535868496247934, + "deflection": 0.0016859598101183486, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.353)" + }, + "parent_node_id": "node_3043", + "improvement_over_parent": null + }, + "node_3045": { + "node_id": "node_3045", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 194.36 kg\n Factor of Safety: 1.40\n Max Deflection: 1.66e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.36256843160075, + "fos_buckling": 1.3994281886710085, + "fos_yielding": 3.6160357815287263, + "deflection": 0.0016629997121403507, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001693)" + }, + "parent_node_id": "node_3044", + "improvement_over_parent": null + }, + "node_3046": { + "node_id": "node_3046", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20067674198117, + "fos_buckling": 1.5676973885759569, + "fos_yielding": 4.150416685867657, + "deflection": 0.0014507694128943597, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_3045", + "improvement_over_parent": null + }, + "node_3047": { + "node_id": "node_3047", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3046", + "improvement_over_parent": null + }, + "node_3048": { + "node_id": "node_3048", + "content": "INITIAL DESIGN (Trace 443)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 194.79 kg\n Factor of Safety: 1.01\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 194.79320977509954, + "fos_buckling": 1.0139975090460884, + "fos_yielding": 4.144660991154371, + "deflection": 0.001755262566888171, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3049": { + "node_id": "node_3049", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 207.34 kg\n Factor of Safety: 1.02\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 207.3415673951958, + "fos_buckling": 1.0244269322520574, + "fos_yielding": 4.165558382034456, + "deflection": 0.0016419715584142978, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_3048", + "improvement_over_parent": null + }, + "node_3050": { + "node_id": "node_3050", + "content": "MODIFICATION: Increase 2 thickness by 52%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 208.49 kg\n Factor of Safety: 1.03\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 208.48851803586578, + "fos_buckling": 1.0285857267008989, + "fos_yielding": 4.1617264818838, + "deflection": 0.0016405588130910284, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.522)" + }, + "parent_node_id": "node_3049", + "improvement_over_parent": null + }, + "node_3051": { + "node_id": "node_3051", + "content": "MODIFICATION: Increase 10 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0049)]\n\nPerformance:\n Mass: 214.72 kg\n Factor of Safety: 0.90\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.72117318978923, + "fos_buckling": 0.9027257535318156, + "fos_yielding": 4.16472318044974, + "deflection": 0.0016257260971670306, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.580)" + }, + "parent_node_id": "node_3050", + "improvement_over_parent": null + }, + "node_3052": { + "node_id": "node_3052", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3051", + "improvement_over_parent": null + }, + "node_3053": { + "node_id": "node_3053", + "content": "INITIAL DESIGN (Trace 444)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0020)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0024)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 101.04 kg\n Factor of Safety: 0.69\n Max Deflection: 3.21e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 101.0416916716409, + "fos_buckling": 0.6898739225522628, + "fos_yielding": 1.7016667659611067, + "deflection": 0.0032061287582114684, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3054": { + "node_id": "node_3054", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0031)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0028)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 131.68 kg\n Factor of Safety: 0.88\n Max Deflection: 2.46e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 131.6784490519855, + "fos_buckling": 0.8815173183971629, + "fos_yielding": 2.219412779253397, + "deflection": 0.0024644588852584526, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.319)" + }, + "parent_node_id": "node_3053", + "improvement_over_parent": null + }, + "node_3055": { + "node_id": "node_3055", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 159.37 kg\n Factor of Safety: 1.05\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.36561617683432, + "fos_buckling": 1.047705424280516, + "fos_yielding": 2.688184128314381, + "deflection": 0.0020394809839891634, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.224)" + }, + "parent_node_id": "node_3054", + "improvement_over_parent": null + }, + "node_3056": { + "node_id": "node_3056", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 187.41 kg\n Factor of Safety: 1.21\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.41034932128508, + "fos_buckling": 1.2092633964271173, + "fos_yielding": 3.163953046695402, + "deflection": 0.0017370142671492437, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.190)" + }, + "parent_node_id": "node_3055", + "improvement_over_parent": null + }, + "node_3057": { + "node_id": "node_3057", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 210.23 kg\n Factor of Safety: 1.34\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.2268084807595, + "fos_buckling": 1.3356720453627595, + "fos_yielding": 3.5518026494118446, + "deflection": 0.0015504618534548113, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.133)" + }, + "parent_node_id": "node_3056", + "improvement_over_parent": null + }, + "node_3058": { + "node_id": "node_3058", + "content": "MODIFICATION: Increase 7 thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.18 kg\n Factor of Safety: 1.39\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.18144522143749, + "fos_buckling": 1.3932646401246067, + "fos_yielding": 3.57164738132728, + "deflection": 0.0014602743922334594, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.245)" + }, + "parent_node_id": "node_3057", + "improvement_over_parent": null + }, + "node_3059": { + "node_id": "node_3059", + "content": "MODIFICATION: Increase 4 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.23260245688633, + "fos_buckling": 1.5677375283942407, + "fos_yielding": 4.1520403289971135, + "deflection": 0.0014506504571872266, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.185)" + }, + "parent_node_id": "node_3058", + "improvement_over_parent": null + }, + "node_3060": { + "node_id": "node_3060", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3059", + "improvement_over_parent": null + }, + "node_3061": { + "node_id": "node_3061", + "content": "INITIAL DESIGN (Trace 445)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 150.55 kg\n Factor of Safety: 0.91\n Max Deflection: 2.15e+11 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.5474086262251, + "fos_buckling": 0.9112436249883554, + "fos_yielding": 3.313228231637761, + "deflection": 215392295357.9966, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3062": { + "node_id": "node_3062", + "content": "MODIFICATION: Increase 1 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 154.15 kg\n Factor of Safety: 0.91\n Max Deflection: 1.86e+11 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.1542624457471, + "fos_buckling": 0.9112952382364776, + "fos_yielding": 3.313837912328379, + "deflection": 186002690587.9013, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.377)" + }, + "parent_node_id": "node_3061", + "improvement_over_parent": null + }, + "node_3063": { + "node_id": "node_3063", + "content": "MODIFICATION: Increase 4 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 164.77 kg\n Factor of Safety: 1.20\n Max Deflection: 1.86e+11 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.77489461619697, + "fos_buckling": 1.2048319232656788, + "fos_yielding": 3.313837912328379, + "deflection": 186002690587.9013, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.477)" + }, + "parent_node_id": "node_3062", + "improvement_over_parent": null + }, + "node_3064": { + "node_id": "node_3064", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 169.64 kg\n Factor of Safety: 1.20\n Max Deflection: 1.95e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.64017897366932, + "fos_buckling": 1.1996497901726066, + "fos_yielding": 3.3189170306757827, + "deflection": 0.0019520367406376125, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001988)" + }, + "parent_node_id": "node_3063", + "improvement_over_parent": null + }, + "node_3065": { + "node_id": "node_3065", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 173.73 kg\n Factor of Safety: 1.25\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.73149851845162, + "fos_buckling": 1.2542208630825424, + "fos_yielding": 3.3189170306757836, + "deflection": 0.0018538807047068031, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001841)" + }, + "parent_node_id": "node_3064", + "improvement_over_parent": null + }, + "node_3066": { + "node_id": "node_3066", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 219.63 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.62701565708826, + "fos_buckling": 1.5225554452393206, + "fos_yielding": 4.193271116671761, + "deflection": 0.001471057408880983, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.290)" + }, + "parent_node_id": "node_3065", + "improvement_over_parent": null + }, + "node_3067": { + "node_id": "node_3067", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M4: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.18142299278628, + "fos_buckling": 1.567491581104787, + "fos_yielding": 4.149582479475229, + "deflection": 0.0014508997106659654, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_3066", + "improvement_over_parent": null + }, + "node_3068": { + "node_id": "node_3068", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3067", + "improvement_over_parent": null + }, + "node_3069": { + "node_id": "node_3069", + "content": "INITIAL DESIGN (Trace 446)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n\nPerformance:\n Mass: 100.98 kg\n Factor of Safety: 0.08\n Max Deflection: 9.23e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 100.98120796284029, + "fos_buckling": 0.07863146803930116, + "fos_yielding": 1.162297915199022, + "deflection": 0.009226916444712803, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3070": { + "node_id": "node_3070", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 117.20 kg\n Factor of Safety: 0.09\n Max Deflection: 7.95e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.20496144877907, + "fos_buckling": 0.08976220605614951, + "fos_yielding": 1.3497370944480647, + "deflection": 0.007952096006885512, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.170)" + }, + "parent_node_id": "node_3069", + "improvement_over_parent": null + }, + "node_3071": { + "node_id": "node_3071", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 148.77 kg\n Factor of Safety: 0.11\n Max Deflection: 6.27e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.76633571977223, + "fos_buckling": 0.11023779238458999, + "fos_yielding": 1.7152128234170014, + "deflection": 0.00626833251386561, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.290)" + }, + "parent_node_id": "node_3070", + "improvement_over_parent": null + }, + "node_3072": { + "node_id": "node_3072", + "content": "MODIFICATION: Increase 9 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 150.84 kg\n Factor of Safety: 0.11\n Max Deflection: 5.78e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.84067343056978, + "fos_buckling": 0.11021352210543184, + "fos_yielding": 1.7979430989362575, + "deflection": 0.0057817012450835405, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.266)" + }, + "parent_node_id": "node_3071", + "improvement_over_parent": null + }, + "node_3073": { + "node_id": "node_3073", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 186.46 kg\n Factor of Safety: 1.35\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 186.46107659816562, + "fos_buckling": 1.3515749698610648, + "fos_yielding": 3.4693743237221986, + "deflection": 0.0017326657571430737, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004691)" + }, + "parent_node_id": "node_3072", + "improvement_over_parent": null + }, + "node_3074": { + "node_id": "node_3074", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.30 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.3026077940841, + "fos_buckling": 1.568286113747684, + "fos_yielding": 4.152130986010496, + "deflection": 0.0014501642984012248, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.217)" + }, + "parent_node_id": "node_3073", + "improvement_over_parent": null + }, + "node_3075": { + "node_id": "node_3075", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3074", + "improvement_over_parent": null + }, + "node_3076": { + "node_id": "node_3076", + "content": "INITIAL DESIGN (Trace 447)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0016)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0007)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0005)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0023)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0021)]\n\nPerformance:\n Mass: 86.38 kg\n Factor of Safety: 0.58\n Max Deflection: 3.70e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 86.38354807989522, + "fos_buckling": 0.5778387354248111, + "fos_yielding": 1.6238717026319247, + "deflection": 0.0036974664936876276, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3077": { + "node_id": "node_3077", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0006)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 99.62 kg\n Factor of Safety: 0.66\n Max Deflection: 3.21e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 99.61611647117894, + "fos_buckling": 0.6606797619100281, + "fos_yielding": 1.8721225830788937, + "deflection": 0.0032090649083963588, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.159)" + }, + "parent_node_id": "node_3076", + "improvement_over_parent": null + }, + "node_3078": { + "node_id": "node_3078", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 125.44 kg\n Factor of Safety: 0.82\n Max Deflection: 2.55e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.44461565986734, + "fos_buckling": 0.8181601672537215, + "fos_yielding": 2.356294966729438, + "deflection": 0.002552602350681218, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.272)" + }, + "parent_node_id": "node_3077", + "improvement_over_parent": null + }, + "node_3079": { + "node_id": "node_3079", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 144.77 kg\n Factor of Safety: 0.93\n Max Deflection: 2.21e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.76880005788863, + "fos_buckling": 0.9323843231079397, + "fos_yielding": 2.7182046952365475, + "deflection": 0.0022146427333669615, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.163)" + }, + "parent_node_id": "node_3078", + "improvement_over_parent": null + }, + "node_3080": { + "node_id": "node_3080", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 174.07 kg\n Factor of Safety: 1.10\n Max Deflection: 1.85e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.06705534269742, + "fos_buckling": 1.0997850654076504, + "fos_yielding": 3.2663620058433156, + "deflection": 0.0018453775147404031, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.217)" + }, + "parent_node_id": "node_3079", + "improvement_over_parent": null + }, + "node_3081": { + "node_id": "node_3081", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.50 kg\n Factor of Safety: 1.36\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.50264011817603, + "fos_buckling": 1.3563441854780645, + "fos_yielding": 4.152442390203612, + "deflection": 0.0014546340482820734, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.299)" + }, + "parent_node_id": "node_3080", + "improvement_over_parent": null + }, + "node_3082": { + "node_id": "node_3082", + "content": "MODIFICATION: Increase 3 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.40685712972532, + "fos_buckling": 1.5688454701146988, + "fos_yielding": 4.1540087421698875, + "deflection": 0.0014495105123227751, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.637)" + }, + "parent_node_id": "node_3081", + "improvement_over_parent": null + }, + "node_3083": { + "node_id": "node_3083", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3082", + "improvement_over_parent": null + }, + "node_3084": { + "node_id": "node_3084", + "content": "INITIAL DESIGN (Trace 448)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0021)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0009)]\n\nPerformance:\n Mass: 83.17 kg\n Factor of Safety: 0.07\n Max Deflection: 1.18e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 83.16687310286233, + "fos_buckling": 0.07041944050567808, + "fos_yielding": 0.8240785087881104, + "deflection": 0.011763695840978668, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3085": { + "node_id": "node_3085", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n\nPerformance:\n Mass: 96.82 kg\n Factor of Safety: 0.08\n Max Deflection: 1.01e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 96.82262657370202, + "fos_buckling": 0.08075305202497648, + "fos_yielding": 0.9606427563074083, + "deflection": 0.010102929237873304, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.172)" + }, + "parent_node_id": "node_3084", + "improvement_over_parent": null + }, + "node_3086": { + "node_id": "node_3086", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n\nPerformance:\n Mass: 114.13 kg\n Factor of Safety: 0.09\n Max Deflection: 8.57e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 114.12840779552836, + "fos_buckling": 0.09335654467974983, + "fos_yielding": 1.1343144534157978, + "deflection": 0.008568963179991158, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.189)" + }, + "parent_node_id": "node_3085", + "improvement_over_parent": null + }, + "node_3087": { + "node_id": "node_3087", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n\nPerformance:\n Mass: 129.43 kg\n Factor of Safety: 0.10\n Max Deflection: 7.55e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 129.42699455019985, + "fos_buckling": 0.10404234029385878, + "fos_yielding": 1.288449718835154, + "deflection": 0.0075542906516743395, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.143)" + }, + "parent_node_id": "node_3086", + "improvement_over_parent": null + }, + "node_3088": { + "node_id": "node_3088", + "content": "MODIFICATION: Increase 9 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 132.90 kg\n Factor of Safety: 0.10\n Max Deflection: 6.39e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 132.90039884178572, + "fos_buckling": 0.10400392493872787, + "fos_yielding": 1.6801939216691, + "deflection": 0.006391079378804378, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.590)" + }, + "parent_node_id": "node_3087", + "improvement_over_parent": null + }, + "node_3089": { + "node_id": "node_3089", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 166.14 kg\n Factor of Safety: 0.84\n Max Deflection: 2.01e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.14358502859642, + "fos_buckling": 0.8385037944503078, + "fos_yielding": 3.2142829348807154, + "deflection": 0.002007333990908418, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004355)" + }, + "parent_node_id": "node_3088", + "improvement_over_parent": null + }, + "node_3090": { + "node_id": "node_3090", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 213.40 kg\n Factor of Safety: 1.03\n Max Deflection: 1.57e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 213.40048796177672, + "fos_buckling": 1.0307589227093734, + "fos_yielding": 4.121996056510163, + "deflection": 0.0015659662213406411, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.311)" + }, + "parent_node_id": "node_3089", + "improvement_over_parent": null + }, + "node_3091": { + "node_id": "node_3091", + "content": "MODIFICATION: Increase 7 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2659641598549, + "fos_buckling": 1.5683295395448182, + "fos_yielding": 4.15151616673856, + "deflection": 0.001450399789851795, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.321)" + }, + "parent_node_id": "node_3090", + "improvement_over_parent": null + }, + "node_3092": { + "node_id": "node_3092", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3091", + "improvement_over_parent": null + }, + "node_3093": { + "node_id": "node_3093", + "content": "INITIAL DESIGN (Trace 449)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 192.94 kg\n Factor of Safety: 0.70\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.93529633886408, + "fos_buckling": 0.6981188814808503, + "fos_yielding": 4.088181915907988, + "deflection": 0.001743712592231148, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3094": { + "node_id": "node_3094", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 205.48 kg\n Factor of Safety: 0.79\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 205.48365395896033, + "fos_buckling": 0.7931728591556348, + "fos_yielding": 4.100599100085392, + "deflection": 0.00169647896810341, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_3093", + "improvement_over_parent": null + }, + "node_3095": { + "node_id": "node_3095", + "content": "MODIFICATION: Increase 7 thickness by 59%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 220.68 kg\n Factor of Safety: 1.56\n Max Deflection: 1.49e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.6793925137404, + "fos_buckling": 1.5567940847760855, + "fos_yielding": 4.1533855235175645, + "deflection": 0.0014882784770365903, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.587)" + }, + "parent_node_id": "node_3094", + "improvement_over_parent": null + }, + "node_3096": { + "node_id": "node_3096", + "content": "MODIFICATION: Increase 1 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.21903456961533, + "fos_buckling": 1.5680390150021797, + "fos_yielding": 4.1512722426330315, + "deflection": 0.0014508316817463793, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.186)" + }, + "parent_node_id": "node_3095", + "improvement_over_parent": null + }, + "node_3097": { + "node_id": "node_3097", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3096", + "improvement_over_parent": null + }, + "node_3098": { + "node_id": "node_3098", + "content": "INITIAL DESIGN (Trace 450)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 146.66 kg\n Factor of Safety: 0.97\n Max Deflection: 2.21e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 146.6569300115144, + "fos_buckling": 0.9713082356775788, + "fos_yielding": 2.7862417358003224, + "deflection": 0.0022145598156399814, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3099": { + "node_id": "node_3099", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 150.14 kg\n Factor of Safety: 1.12\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.1370185635789, + "fos_buckling": 1.1217783868883475, + "fos_yielding": 2.795334017940276, + "deflection": 0.0021469317246492806, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001549)" + }, + "parent_node_id": "node_3098", + "improvement_over_parent": null + }, + "node_3100": { + "node_id": "node_3100", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 196.17 kg\n Factor of Safety: 1.41\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.16875755818893, + "fos_buckling": 1.4102453056716215, + "fos_yielding": 3.649375705117729, + "deflection": 0.0016479279103110075, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.332)" + }, + "parent_node_id": "node_3099", + "improvement_over_parent": null + }, + "node_3101": { + "node_id": "node_3101", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.31 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.30715054830225, + "fos_buckling": 1.5682833084482064, + "fos_yielding": 4.1522254057759875, + "deflection": 0.0014501326972733823, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.152)" + }, + "parent_node_id": "node_3100", + "improvement_over_parent": null + }, + "node_3102": { + "node_id": "node_3102", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3101", + "improvement_over_parent": null + }, + "node_3103": { + "node_id": "node_3103", + "content": "INITIAL DESIGN (Trace 451)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 181.38 kg\n Factor of Safety: 1.02\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.37527711357117, + "fos_buckling": 1.017285155327642, + "fos_yielding": 3.5375514311474956, + "deflection": 0.0018634409314899699, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3104": { + "node_id": "node_3104", + "content": "MODIFICATION: Increase 1 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 184.63 kg\n Factor of Safety: 1.04\n Max Deflection: 1.79e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.62574267947906, + "fos_buckling": 1.0372015328141064, + "fos_yielding": 3.534246099104282, + "deflection": 0.0017897836039061008, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.300)" + }, + "parent_node_id": "node_3103", + "improvement_over_parent": null + }, + "node_3105": { + "node_id": "node_3105", + "content": "MODIFICATION: Increase 0 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 188.05 kg\n Factor of Safety: 1.30\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.04629797628274, + "fos_buckling": 1.3029788124632815, + "fos_yielding": 3.547372854991286, + "deflection": 0.0017080812322794318, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.311)" + }, + "parent_node_id": "node_3104", + "improvement_over_parent": null + }, + "node_3106": { + "node_id": "node_3106", + "content": "MODIFICATION: Increase 5 thickness by 43%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 189.54 kg\n Factor of Safety: 1.32\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.53881911996353, + "fos_buckling": 1.3200258938885683, + "fos_yielding": 3.5431836375944066, + "deflection": 0.001699904737373679, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.429)" + }, + "parent_node_id": "node_3105", + "improvement_over_parent": null + }, + "node_3107": { + "node_id": "node_3107", + "content": "MODIFICATION: Increase 2 thickness by 36%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 190.29 kg\n Factor of Safety: 1.37\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.29216977343404, + "fos_buckling": 1.3748083804019497, + "fos_yielding": 3.5402042973627172, + "deflection": 0.0016981477150379647, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.357)" + }, + "parent_node_id": "node_3106", + "improvement_over_parent": null + }, + "node_3108": { + "node_id": "node_3108", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.21 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.20870090993589, + "fos_buckling": 1.567681002556284, + "fos_yielding": 4.150149242338615, + "deflection": 0.0014507282434328274, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.190)" + }, + "parent_node_id": "node_3107", + "improvement_over_parent": null + }, + "node_3109": { + "node_id": "node_3109", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3108", + "improvement_over_parent": null + }, + "node_3110": { + "node_id": "node_3110", + "content": "INITIAL DESIGN (Trace 452)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 134.80 kg\n Factor of Safety: 0.77\n Max Deflection: 2.44e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.79997400799212, + "fos_buckling": 0.7746211674582429, + "fos_yielding": 2.5865840769533914, + "deflection": 0.0024406741709873335, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3111": { + "node_id": "node_3111", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 154.43 kg\n Factor of Safety: 0.87\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.4296996340377, + "fos_buckling": 0.868726937384258, + "fos_yielding": 2.9619090711054046, + "deflection": 0.002133042668651045, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_3110", + "improvement_over_parent": null + }, + "node_3112": { + "node_id": "node_3112", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n\nPerformance:\n Mass: 158.14 kg\n Factor of Safety: 1.09\n Max Deflection: 2.07e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.13541618935335, + "fos_buckling": 1.0904394108953452, + "fos_yielding": 2.9712508357259506, + "deflection": 0.002071679862214847, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001656)" + }, + "parent_node_id": "node_3111", + "improvement_over_parent": null + }, + "node_3113": { + "node_id": "node_3113", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 189.61 kg\n Factor of Safety: 1.26\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.61387324341285, + "fos_buckling": 1.2641361805699376, + "fos_yielding": 3.560277625835842, + "deflection": 0.0017307600894730735, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_3112", + "improvement_over_parent": null + }, + "node_3114": { + "node_id": "node_3114", + "content": "MODIFICATION: Increase 0 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 191.82 kg\n Factor of Safety: 1.38\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.82411455336816, + "fos_buckling": 1.3841204031814716, + "fos_yielding": 3.5688919096203158, + "deflection": 0.0016847664082252293, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.181)" + }, + "parent_node_id": "node_3113", + "improvement_over_parent": null + }, + "node_3115": { + "node_id": "node_3115", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.43 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.42846834319243, + "fos_buckling": 1.5689714368043137, + "fos_yielding": 4.154545171266684, + "deflection": 0.001449336052266578, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_3114", + "improvement_over_parent": null + }, + "node_3116": { + "node_id": "node_3116", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3115", + "improvement_over_parent": null + }, + "node_3117": { + "node_id": "node_3117", + "content": "INITIAL DESIGN (Trace 453)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 172.58 kg\n Factor of Safety: 0.99\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.58409316571402, + "fos_buckling": 0.985271215568082, + "fos_yielding": 2.7657968441742984, + "deflection": 0.0017978598441753969, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3118": { + "node_id": "node_3118", + "content": "MODIFICATION: Increase 3 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 173.08 kg\n Factor of Safety: 0.98\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 173.07769727667147, + "fos_buckling": 0.9846633158761618, + "fos_yielding": 2.7640903830264225, + "deflection": 0.001796800320831798, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.235)" + }, + "parent_node_id": "node_3117", + "improvement_over_parent": null + }, + "node_3119": { + "node_id": "node_3119", + "content": "MODIFICATION: Increase 6 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0047)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 181.01 kg\n Factor of Safety: 1.14\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.00735331358888, + "fos_buckling": 1.1376093723133043, + "fos_yielding": 3.4290521314657454, + "deflection": 0.0017633310163682624, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.497)" + }, + "parent_node_id": "node_3118", + "improvement_over_parent": null + }, + "node_3120": { + "node_id": "node_3120", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.46 kg\n Factor of Safety: 1.34\n Max Deflection: 1.46e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.464705477733, + "fos_buckling": 1.3446355118749294, + "fos_yielding": 4.15383804616845, + "deflection": 0.0014581332343724504, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.233)" + }, + "parent_node_id": "node_3119", + "improvement_over_parent": null + }, + "node_3121": { + "node_id": "node_3121", + "content": "MODIFICATION: Increase 3 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.36 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 221.36203269334192, + "fos_buckling": 1.5690499395877404, + "fos_yielding": 4.1552451306224265, + "deflection": 0.0014528955860270397, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.634)" + }, + "parent_node_id": "node_3120", + "improvement_over_parent": null + }, + "node_3122": { + "node_id": "node_3122", + "content": "MODIFICATION: Increase 8 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.19 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.19489455707492, + "fos_buckling": 1.5676652142692409, + "fos_yielding": 4.150147875903475, + "deflection": 0.001450851370876412, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.297)" + }, + "parent_node_id": "node_3121", + "improvement_over_parent": null + }, + "node_3123": { + "node_id": "node_3123", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3122", + "improvement_over_parent": null + }, + "node_3124": { + "node_id": "node_3124", + "content": "INITIAL DESIGN (Trace 454)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 157.26 kg\n Factor of Safety: 0.97\n Max Deflection: 1.93e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.2637215167794, + "fos_buckling": 0.9747699089225474, + "fos_yielding": 2.3783898625351014, + "deflection": 0.0019250353053717664, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3125": { + "node_id": "node_3125", + "content": "MODIFICATION: Increase 4 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 164.98 kg\n Factor of Safety: 1.16\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.98313637746617, + "fos_buckling": 1.1608745949411479, + "fos_yielding": 3.266291170620666, + "deflection": 0.0018925550463160965, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.416)" + }, + "parent_node_id": "node_3124", + "improvement_over_parent": null + }, + "node_3126": { + "node_id": "node_3126", + "content": "MODIFICATION: Increase 5 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 166.12 kg\n Factor of Safety: 1.12\n Max Deflection: 1.89e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.12411232879407, + "fos_buckling": 1.1155574972373252, + "fos_yielding": 3.2646191765586225, + "deflection": 0.0018913688805762478, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.330)" + }, + "parent_node_id": "node_3125", + "improvement_over_parent": null + }, + "node_3127": { + "node_id": "node_3127", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 176.02 kg\n Factor of Safety: 1.29\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.01950975230272, + "fos_buckling": 1.2872055862738025, + "fos_yielding": 3.2749448198310573, + "deflection": 0.0018341681618438592, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002392)" + }, + "parent_node_id": "node_3126", + "improvement_over_parent": null + }, + "node_3128": { + "node_id": "node_3128", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.32 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.31903879769237, + "fos_buckling": 1.568419290350533, + "fos_yielding": 4.151495196440614, + "deflection": 0.0014500039278489882, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_3127", + "improvement_over_parent": null + }, + "node_3129": { + "node_id": "node_3129", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3128", + "improvement_over_parent": null + }, + "node_3130": { + "node_id": "node_3130", + "content": "INITIAL DESIGN (Trace 455)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0040)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0008)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 116.16 kg\n Factor of Safety: 0.07\n Max Deflection: 7.64e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 116.16083672489768, + "fos_buckling": 0.06941969608554537, + "fos_yielding": 1.0688175201563976, + "deflection": 0.007643249745931817, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3131": { + "node_id": "node_3131", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 134.38 kg\n Factor of Safety: 0.08\n Max Deflection: 6.61e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.37867711073855, + "fos_buckling": 0.07936916514903057, + "fos_yielding": 1.238213018705272, + "deflection": 0.006609941587321905, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_3130", + "improvement_over_parent": null + }, + "node_3132": { + "node_id": "node_3132", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 137.17 kg\n Factor of Safety: 0.08\n Max Deflection: 6.60e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.17084630639368, + "fos_buckling": 0.07934561725669186, + "fos_yielding": 1.2378456555510533, + "deflection": 0.006599913275758791, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001515)" + }, + "parent_node_id": "node_3131", + "improvement_over_parent": null + }, + "node_3133": { + "node_id": "node_3133", + "content": "MODIFICATION: Increase 8 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0009)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0036)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 141.55 kg\n Factor of Safety: 0.08\n Max Deflection: 5.96e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.54880308562807, + "fos_buckling": 0.07930872366573555, + "fos_yielding": 1.2372700904113278, + "deflection": 0.005955713819236748, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.495)" + }, + "parent_node_id": "node_3132", + "improvement_over_parent": null + }, + "node_3134": { + "node_id": "node_3134", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0046)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 180.10 kg\n Factor of Safety: 0.10\n Max Deflection: 4.69e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.09667323329273, + "fos_buckling": 0.09859162199428873, + "fos_yielding": 1.5808553072471843, + "deflection": 0.004692116216944505, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.300)" + }, + "parent_node_id": "node_3133", + "improvement_over_parent": null + }, + "node_3135": { + "node_id": "node_3135", + "content": "MODIFICATION: Increase 3 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0085)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0046)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 192.12 kg\n Factor of Safety: 0.10\n Max Deflection: 4.69e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.12041705095228, + "fos_buckling": 0.09859162199428877, + "fos_yielding": 1.5808553072471847, + "deflection": 0.0046940350420486745, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.393)" + }, + "parent_node_id": "node_3134", + "improvement_over_parent": null + }, + "node_3136": { + "node_id": "node_3136", + "content": "MODIFICATION: Increase 8 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0085)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0068)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 198.65 kg\n Factor of Safety: 0.10\n Max Deflection: 4.39e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.64850201544618, + "fos_buckling": 0.0985234991338531, + "fos_yielding": 1.5797629995714797, + "deflection": 0.004386351784637518, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.460)" + }, + "parent_node_id": "node_3135", + "improvement_over_parent": null + }, + "node_3137": { + "node_id": "node_3137", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0085)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0068)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 241.30 kg\n Factor of Safety: 1.24\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 241.30047036681958, + "fos_buckling": 1.2391608978365563, + "fos_yielding": 4.776023196700364, + "deflection": 0.0014422478922935986, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3136", + "improvement_over_parent": null + }, + "node_3138": { + "node_id": "node_3138", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3137", + "improvement_over_parent": null + }, + "node_3139": { + "node_id": "node_3139", + "content": "INITIAL DESIGN (Trace 456)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n\nPerformance:\n Mass: 147.86 kg\n Factor of Safety: 1.10\n Max Deflection: 2.17e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.8638038597042, + "fos_buckling": 1.1014417225199291, + "fos_yielding": 2.764481253874779, + "deflection": 0.002174101099590611, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3140": { + "node_id": "node_3140", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 175.29 kg\n Factor of Safety: 1.27\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.29472892919875, + "fos_buckling": 1.2706365048032433, + "fos_yielding": 3.275631493756383, + "deflection": 0.0018371232383838855, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_3139", + "improvement_over_parent": null + }, + "node_3141": { + "node_id": "node_3141", + "content": "MODIFICATION: Increase 2 thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 175.89 kg\n Factor of Safety: 1.29\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.89051667961587, + "fos_buckling": 1.286351960715126, + "fos_yielding": 3.2733635845135045, + "deflection": 0.0018355498825921455, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.290)" + }, + "parent_node_id": "node_3140", + "improvement_over_parent": null + }, + "node_3142": { + "node_id": "node_3142", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.15927799165536, + "fos_buckling": 1.5674586974572087, + "fos_yielding": 4.149540729273953, + "deflection": 0.0014510673407151836, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.295)" + }, + "parent_node_id": "node_3141", + "improvement_over_parent": null + }, + "node_3143": { + "node_id": "node_3143", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3142", + "improvement_over_parent": null + }, + "node_3144": { + "node_id": "node_3144", + "content": "INITIAL DESIGN (Trace 457)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 142.94 kg\n Factor of Safety: 0.04\n Max Deflection: 1.30e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.93809009259414, + "fos_buckling": 0.03650104991411624, + "fos_yielding": 0.994203749972824, + "deflection": 0.013040106728332543, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3145": { + "node_id": "node_3145", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 174.02 kg\n Factor of Safety: 1.16\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.02168017924913, + "fos_buckling": 1.1556577811938753, + "fos_yielding": 3.641489686189222, + "deflection": 0.0019607595491486205, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004053)" + }, + "parent_node_id": "node_3144", + "improvement_over_parent": null + }, + "node_3146": { + "node_id": "node_3146", + "content": "MODIFICATION: Increase 1 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 177.64 kg\n Factor of Safety: 1.15\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.63775184546466, + "fos_buckling": 1.1455182939356563, + "fos_yielding": 3.6316770751072425, + "deflection": 0.0018613582272903188, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.340)" + }, + "parent_node_id": "node_3145", + "improvement_over_parent": null + }, + "node_3147": { + "node_id": "node_3147", + "content": "MODIFICATION: Increase 3 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 178.80 kg\n Factor of Safety: 1.15\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.80010656330427, + "fos_buckling": 1.1463663786504805, + "fos_yielding": 3.6326018331566745, + "deflection": 0.0018614850622222887, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.381)" + }, + "parent_node_id": "node_3146", + "improvement_over_parent": null + }, + "node_3148": { + "node_id": "node_3148", + "content": "MODIFICATION: Increase 9 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 184.49 kg\n Factor of Safety: 1.31\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.4909249217215, + "fos_buckling": 1.3121362377233128, + "fos_yielding": 3.6227155809545466, + "deflection": 0.0017619706664825194, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.198)" + }, + "parent_node_id": "node_3147", + "improvement_over_parent": null + }, + "node_3149": { + "node_id": "node_3149", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 189.79 kg\n Factor of Safety: 1.39\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.79277625119272, + "fos_buckling": 1.385390761608783, + "fos_yielding": 3.586648823968795, + "deflection": 0.001684141104364812, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002181)" + }, + "parent_node_id": "node_3148", + "improvement_over_parent": null + }, + "node_3150": { + "node_id": "node_3150", + "content": "MODIFICATION: Increase 8 thickness by 58%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0042)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 195.33 kg\n Factor of Safety: 1.35\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.32673557689168, + "fos_buckling": 1.3532635239812516, + "fos_yielding": 3.5879195795230756, + "deflection": 0.001676342224911706, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.582)" + }, + "parent_node_id": "node_3149", + "improvement_over_parent": null + }, + "node_3151": { + "node_id": "node_3151", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0049)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 226.48 kg\n Factor of Safety: 1.52\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 226.4819149076443, + "fos_buckling": 1.5224550178209482, + "fos_yielding": 4.1605645785216385, + "deflection": 0.0014477924775565091, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_3150", + "improvement_over_parent": null + }, + "node_3152": { + "node_id": "node_3152", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3151", + "improvement_over_parent": null + }, + "node_3153": { + "node_id": "node_3153", + "content": "INITIAL DESIGN (Trace 458)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3154": { + "node_id": "node_3154", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 140.22 kg\n Factor of Safety: 1.02\n Max Deflection: 2.35e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.2246653204957, + "fos_buckling": 1.0176404313632939, + "fos_yielding": 2.7447369654291287, + "deflection": 0.0023514378933151715, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001622)" + }, + "parent_node_id": "node_3153", + "improvement_over_parent": null + }, + "node_3155": { + "node_id": "node_3155", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 183.33 kg\n Factor of Safety: 1.28\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.32887933120958, + "fos_buckling": 1.280845358598751, + "fos_yielding": 3.586452092560652, + "deflection": 0.00180994531907655, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.332)" + }, + "parent_node_id": "node_3154", + "improvement_over_parent": null + }, + "node_3156": { + "node_id": "node_3156", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 187.75 kg\n Factor of Safety: 1.34\n Max Deflection: 1.72e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.74705117947454, + "fos_buckling": 1.33842992932443, + "fos_yielding": 3.586452092560651, + "deflection": 0.0017171791019420471, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002000)" + }, + "parent_node_id": "node_3155", + "improvement_over_parent": null + }, + "node_3157": { + "node_id": "node_3157", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 190.78 kg\n Factor of Safety: 1.38\n Max Deflection: 1.69e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.78301454773703, + "fos_buckling": 1.3778494422608267, + "fos_yielding": 3.549670575343096, + "deflection": 0.0016938238794083336, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001658)" + }, + "parent_node_id": "node_3156", + "improvement_over_parent": null + }, + "node_3158": { + "node_id": "node_3158", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.43 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4328474661107, + "fos_buckling": 1.5690218592821312, + "fos_yielding": 4.1547210963754395, + "deflection": 0.0014492870539630134, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.188)" + }, + "parent_node_id": "node_3157", + "improvement_over_parent": null + }, + "node_3159": { + "node_id": "node_3159", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3158", + "improvement_over_parent": null + }, + "node_3160": { + "node_id": "node_3160", + "content": "INITIAL DESIGN (Trace 459)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 204.81 kg\n Factor of Safety: 0.98\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.8052553634502, + "fos_buckling": 0.9845022921601958, + "fos_yielding": 4.1184537461143425, + "deflection": 0.0015830842043145484, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3161": { + "node_id": "node_3161", + "content": "MODIFICATION: Increase 0 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.79 kg\n Factor of Safety: 1.37\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.78932215125542, + "fos_buckling": 1.3695084292751896, + "fos_yielding": 4.139459417403117, + "deflection": 0.0014962400359573318, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.422)" + }, + "parent_node_id": "node_3160", + "improvement_over_parent": null + }, + "node_3162": { + "node_id": "node_3162", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 222.34 kg\n Factor of Safety: 1.56\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.33767977135167, + "fos_buckling": 1.563734746909584, + "fos_yielding": 4.1539095061766815, + "deflection": 0.0014537775614837348, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_3161", + "improvement_over_parent": null + }, + "node_3163": { + "node_id": "node_3163", + "content": "MODIFICATION: Increase 5 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26592863935625, + "fos_buckling": 1.5680284876544077, + "fos_yielding": 4.15134312715033, + "deflection": 0.001450381822502727, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.195)" + }, + "parent_node_id": "node_3162", + "improvement_over_parent": null + }, + "node_3164": { + "node_id": "node_3164", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3163", + "improvement_over_parent": null + }, + "node_3165": { + "node_id": "node_3165", + "content": "INITIAL DESIGN (Trace 460)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n\nPerformance:\n Mass: 99.14 kg\n Factor of Safety: 0.03\n Max Deflection: 1.07e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 99.13717220496724, + "fos_buckling": 0.029859600177475135, + "fos_yielding": 0.6638602297310352, + "deflection": 0.010689138222543053, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3166": { + "node_id": "node_3166", + "content": "MODIFICATION: Increase 9 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 109.56 kg\n Factor of Safety: 0.03\n Max Deflection: 1.02e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.5600378987425, + "fos_buckling": 0.029826481097414696, + "fos_yielding": 0.6631239023868403, + "deflection": 0.01022242413198373, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.623)" + }, + "parent_node_id": "node_3165", + "improvement_over_parent": null + }, + "node_3167": { + "node_id": "node_3167", + "content": "MODIFICATION: Increase 6 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 115.66 kg\n Factor of Safety: 0.03\n Max Deflection: 1.02e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 115.65513798908479, + "fos_buckling": 0.02982648109741469, + "fos_yielding": 0.6631239023868402, + "deflection": 0.010228162582457045, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.462)" + }, + "parent_node_id": "node_3166", + "improvement_over_parent": null + }, + "node_3168": { + "node_id": "node_3168", + "content": "MODIFICATION: Increase 8 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 117.71 kg\n Factor of Safety: 0.03\n Max Deflection: 1.02e-02 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.71289555388164, + "fos_buckling": 0.029819951171257793, + "fos_yielding": 0.6629787243451759, + "deflection": 0.010227563377400975, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.350)" + }, + "parent_node_id": "node_3167", + "improvement_over_parent": null + }, + "node_3169": { + "node_id": "node_3169", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 153.88 kg\n Factor of Safety: 0.04\n Max Deflection: 7.82e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.88207057864614, + "fos_buckling": 0.038229358246223664, + "fos_yielding": 0.8700881193777011, + "deflection": 0.007824943594276716, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.332)" + }, + "parent_node_id": "node_3168", + "improvement_over_parent": null + }, + "node_3170": { + "node_id": "node_3170", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 178.55 kg\n Factor of Safety: 0.04\n Max Deflection: 6.74e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.5476069047459, + "fos_buckling": 0.04375994887968221, + "fos_yielding": 1.0125384484385065, + "deflection": 0.00674419626103897, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.176)" + }, + "parent_node_id": "node_3169", + "improvement_over_parent": null + }, + "node_3171": { + "node_id": "node_3171", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 222.16 kg\n Factor of Safety: 1.42\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 222.1586611475066, + "fos_buckling": 1.4220269197037188, + "fos_yielding": 4.156635084463162, + "deflection": 0.0014523427586106467, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_3170", + "improvement_over_parent": null + }, + "node_3172": { + "node_id": "node_3172", + "content": "MODIFICATION: Increase 2 thickness by 50%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.27470054263728, + "fos_buckling": 1.5681195934976158, + "fos_yielding": 4.151841638155348, + "deflection": 0.0014503104209454122, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.502)" + }, + "parent_node_id": "node_3171", + "improvement_over_parent": null + }, + "node_3173": { + "node_id": "node_3173", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3172", + "improvement_over_parent": null + }, + "node_3174": { + "node_id": "node_3174", + "content": "INITIAL DESIGN (Trace 461)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 95.95 kg\n Factor of Safety: 0.73\n Max Deflection: 3.42e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 95.94778254952278, + "fos_buckling": 0.7258825491569074, + "fos_yielding": 1.8617505674221362, + "deflection": 0.0034211723892899363, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3175": { + "node_id": "node_3175", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0018)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0024)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n\nPerformance:\n Mass: 98.67 kg\n Factor of Safety: 0.77\n Max Deflection: 3.26e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 98.66692154606578, + "fos_buckling": 0.7685939112848735, + "fos_yielding": 1.8387373891436656, + "deflection": 0.0032562477233830916, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001077)" + }, + "parent_node_id": "node_3174", + "improvement_over_parent": null + }, + "node_3176": { + "node_id": "node_3176", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n\nPerformance:\n Mass: 110.03 kg\n Factor of Safety: 0.85\n Max Deflection: 2.92e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 110.02623046371454, + "fos_buckling": 0.8493375471303922, + "fos_yielding": 2.050010533102141, + "deflection": 0.0029221706945749045, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_3175", + "improvement_over_parent": null + }, + "node_3177": { + "node_id": "node_3177", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0013)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0033)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0031)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n\nPerformance:\n Mass: 125.44 kg\n Factor of Safety: 0.96\n Max Deflection: 2.57e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.44358234468591, + "fos_buckling": 0.9563886662160541, + "fos_yielding": 2.3366223690514105, + "deflection": 0.0025655326925986726, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.147)" + }, + "parent_node_id": "node_3176", + "improvement_over_parent": null + }, + "node_3178": { + "node_id": "node_3178", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n\nPerformance:\n Mass: 144.30 kg\n Factor of Safety: 1.08\n Max Deflection: 2.23e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.30133995018633, + "fos_buckling": 1.0833664217013363, + "fos_yielding": 2.6869772296302523, + "deflection": 0.0022329238806987725, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.159)" + }, + "parent_node_id": "node_3177", + "improvement_over_parent": null + }, + "node_3179": { + "node_id": "node_3179", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 182.13 kg\n Factor of Safety: 1.32\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.12775597306648, + "fos_buckling": 1.324983936424842, + "fos_yielding": 3.3890355557294276, + "deflection": 0.001773396700519134, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.282)" + }, + "parent_node_id": "node_3178", + "improvement_over_parent": null + }, + "node_3180": { + "node_id": "node_3180", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26208398892044, + "fos_buckling": 1.5680292252658383, + "fos_yielding": 4.151412360882336, + "deflection": 0.0014504165749279062, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_3179", + "improvement_over_parent": null + }, + "node_3181": { + "node_id": "node_3181", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3180", + "improvement_over_parent": null + }, + "node_3182": { + "node_id": "node_3182", + "content": "INITIAL DESIGN (Trace 462)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 159.99 kg\n Factor of Safety: 0.72\n Max Deflection: 2.13e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 159.99344606791198, + "fos_buckling": 0.718547978833259, + "fos_yielding": 3.254907558474586, + "deflection": 0.0021269296355817787, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3183": { + "node_id": "node_3183", + "content": "MODIFICATION: Increase 10 thickness by 63%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 172.27 kg\n Factor of Safety: 1.27\n Max Deflection: 1.86e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 172.27107617020494, + "fos_buckling": 1.2730505745975806, + "fos_yielding": 3.2472323492628963, + "deflection": 0.001857142481103605, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.626)" + }, + "parent_node_id": "node_3182", + "improvement_over_parent": null + }, + "node_3184": { + "node_id": "node_3184", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 199.41 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.4077501688539, + "fos_buckling": 1.4396428131074688, + "fos_yielding": 3.7564889799754564, + "deflection": 0.0016073344209520531, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.171)" + }, + "parent_node_id": "node_3183", + "improvement_over_parent": null + }, + "node_3185": { + "node_id": "node_3185", + "content": "MODIFICATION: Increase 8 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 200.98 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 200.97581699787273, + "fos_buckling": 1.4384982190639843, + "fos_yielding": 3.752192155168869, + "deflection": 0.0016051681326270666, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.274)" + }, + "parent_node_id": "node_3184", + "improvement_over_parent": null + }, + "node_3186": { + "node_id": "node_3186", + "content": "MODIFICATION: Increase 3 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 201.72 kg\n Factor of Safety: 1.44\n Max Deflection: 1.60e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.72076196819108, + "fos_buckling": 1.442887952688683, + "fos_yielding": 3.7526897337186806, + "deflection": 0.0016031813202499888, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.206)" + }, + "parent_node_id": "node_3185", + "improvement_over_parent": null + }, + "node_3187": { + "node_id": "node_3187", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.20 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.19744655543644, + "fos_buckling": 1.5672314642069982, + "fos_yielding": 4.1506317897393705, + "deflection": 0.0014508790310469707, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.117)" + }, + "parent_node_id": "node_3186", + "improvement_over_parent": null + }, + "node_3188": { + "node_id": "node_3188", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3187", + "improvement_over_parent": null + }, + "node_3189": { + "node_id": "node_3189", + "content": "INITIAL DESIGN (Trace 463)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0023)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 139.87 kg\n Factor of Safety: 0.52\n Max Deflection: 2.52e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 139.86994569852075, + "fos_buckling": 0.5210213432327759, + "fos_yielding": 2.8889985093898525, + "deflection": 0.002517224123924746, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3190": { + "node_id": "node_3190", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 174.22 kg\n Factor of Safety: 0.63\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.2169073189187, + "fos_buckling": 0.6306164692873402, + "fos_yielding": 3.5916376797886125, + "deflection": 0.0020217611231349727, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.264)" + }, + "parent_node_id": "node_3189", + "improvement_over_parent": null + }, + "node_3191": { + "node_id": "node_3191", + "content": "MODIFICATION: Increase 7 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 178.35 kg\n Factor of Safety: 0.82\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.35430142597824, + "fos_buckling": 0.8162637879758843, + "fos_yielding": 3.6122716511687023, + "deflection": 0.001914504859557532, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.190)" + }, + "parent_node_id": "node_3190", + "improvement_over_parent": null + }, + "node_3192": { + "node_id": "node_3192", + "content": "MODIFICATION: Increase 3 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 179.53 kg\n Factor of Safety: 0.83\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.52583671651144, + "fos_buckling": 0.8254866417877058, + "fos_yielding": 3.6130594173107746, + "deflection": 0.0019106666797461646, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.376)" + }, + "parent_node_id": "node_3191", + "improvement_over_parent": null + }, + "node_3193": { + "node_id": "node_3193", + "content": "MODIFICATION: Increase 9 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 181.39 kg\n Factor of Safety: 0.84\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.39300931634563, + "fos_buckling": 0.8357286605876252, + "fos_yielding": 3.6139142482442725, + "deflection": 0.0019061823631086495, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.221)" + }, + "parent_node_id": "node_3192", + "improvement_over_parent": null + }, + "node_3194": { + "node_id": "node_3194", + "content": "MODIFICATION: Increase 1 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 184.85 kg\n Factor of Safety: 0.80\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 184.85460046024832, + "fos_buckling": 0.8010727302719811, + "fos_yielding": 3.6109353550366508, + "deflection": 0.0018328331567501628, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.314)" + }, + "parent_node_id": "node_3193", + "improvement_over_parent": null + }, + "node_3195": { + "node_id": "node_3195", + "content": "MODIFICATION: Increase 7 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 196.00 kg\n Factor of Safety: 1.41\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 196.00206780133271, + "fos_buckling": 1.4095102259993415, + "fos_yielding": 3.6469246173710683, + "deflection": 0.0016495007843220512, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.445)" + }, + "parent_node_id": "node_3194", + "improvement_over_parent": null + }, + "node_3196": { + "node_id": "node_3196", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1200616159137, + "fos_buckling": 1.567505356844035, + "fos_yielding": 4.1494769731532095, + "deflection": 0.0014514951017832892, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.152)" + }, + "parent_node_id": "node_3195", + "improvement_over_parent": null + }, + "node_3197": { + "node_id": "node_3197", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3196", + "improvement_over_parent": null + }, + "node_3198": { + "node_id": "node_3198", + "content": "INITIAL DESIGN (Trace 464)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0023)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n\nPerformance:\n Mass: 92.98 kg\n Factor of Safety: 0.07\n Max Deflection: 4.74e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 92.98279742356037, + "fos_buckling": 0.07477965491284826, + "fos_yielding": 0.2703169871072125, + "deflection": 47372286733436.164, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3199": { + "node_id": "node_3199", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 109.60 kg\n Factor of Safety: 0.08\n Max Deflection: 2.95e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.59820091760399, + "fos_buckling": 0.08166826846220464, + "fos_yielding": 1.08126794842885, + "deflection": 29531326221237.44, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.189)" + }, + "parent_node_id": "node_3198", + "improvement_over_parent": null + }, + "node_3200": { + "node_id": "node_3200", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n\nPerformance:\n Mass: 111.91 kg\n Factor of Safety: 0.04\n Max Deflection: 1.58e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.91195634937827, + "fos_buckling": 0.04199541583581453, + "fos_yielding": 0.9659470070469258, + "deflection": 0.015775249563834862, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001240)" + }, + "parent_node_id": "node_3199", + "improvement_over_parent": null + }, + "node_3201": { + "node_id": "node_3201", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n\nPerformance:\n Mass: 140.30 kg\n Factor of Safety: 1.03\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.30113278427456, + "fos_buckling": 1.0300846660088772, + "fos_yielding": 2.7397911374878254, + "deflection": 0.0023268297962619907, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003635)" + }, + "parent_node_id": "node_3200", + "improvement_over_parent": null + }, + "node_3202": { + "node_id": "node_3202", + "content": "MODIFICATION: Increase 3 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0057)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n\nPerformance:\n Mass: 150.48 kg\n Factor of Safety: 1.01\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.47617553414918, + "fos_buckling": 1.0113967889826208, + "fos_yielding": 3.223017258370904, + "deflection": 0.002327298899988277, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.486)" + }, + "parent_node_id": "node_3201", + "improvement_over_parent": null + }, + "node_3203": { + "node_id": "node_3203", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0071)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 183.29 kg\n Factor of Safety: 1.20\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.28837061494866, + "fos_buckling": 1.2024984685887234, + "fos_yielding": 3.927363850781274, + "deflection": 0.0019105851638497472, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.236)" + }, + "parent_node_id": "node_3202", + "improvement_over_parent": null + }, + "node_3204": { + "node_id": "node_3204", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0091)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 230.19 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 230.18543656065248, + "fos_buckling": 1.457336276463176, + "fos_yielding": 4.935713195819071, + "deflection": 0.001520998852498181, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.284)" + }, + "parent_node_id": "node_3203", + "improvement_over_parent": null + }, + "node_3205": { + "node_id": "node_3205", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0091)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 236.34 kg\n Factor of Safety: 0.95\n Max Deflection: 1.44e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 236.3392512989503, + "fos_buckling": 0.9453651960657347, + "fos_yielding": 4.817298876213202, + "deflection": 0.0014373590459364491, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_3204", + "improvement_over_parent": null + }, + "node_3206": { + "node_id": "node_3206", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3205", + "improvement_over_parent": null + }, + "node_3207": { + "node_id": "node_3207", + "content": "INITIAL DESIGN (Trace 465)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 117.01 kg\n Factor of Safety: 0.04\n Max Deflection: 1.45e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.01157894750608, + "fos_buckling": 0.0387255602101166, + "fos_yielding": 1.0614745146313715, + "deflection": 0.014468572787020571, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3208": { + "node_id": "node_3208", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0025)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 121.46 kg\n Factor of Safety: 0.10\n Max Deflection: 7.16e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.46168838676867, + "fos_buckling": 0.09747055789578135, + "fos_yielding": 1.5595075527283568, + "deflection": 0.007161239966086592, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001807)" + }, + "parent_node_id": "node_3207", + "improvement_over_parent": null + }, + "node_3209": { + "node_id": "node_3209", + "content": "MODIFICATION: Increase all_members thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 145.70 kg\n Factor of Safety: 0.11\n Max Deflection: 5.98e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.70352255382716, + "fos_buckling": 0.11374635965562384, + "fos_yielding": 1.8659803026949782, + "deflection": 0.0059761536989799205, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.215)" + }, + "parent_node_id": "node_3208", + "improvement_over_parent": null + }, + "node_3210": { + "node_id": "node_3210", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 168.11 kg\n Factor of Safety: 0.13\n Max Deflection: 5.18e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.10538967654392, + "fos_buckling": 0.12786375408489611, + "fos_yielding": 2.1477228267874664, + "deflection": 0.0051848480413766, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.168)" + }, + "parent_node_id": "node_3209", + "improvement_over_parent": null + }, + "node_3211": { + "node_id": "node_3211", + "content": "MODIFICATION: Increase 8 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 170.60 kg\n Factor of Safety: 0.13\n Max Deflection: 4.91e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.6026830321205, + "fos_buckling": 0.12782993858380298, + "fos_yielding": 2.1471548290455207, + "deflection": 0.004910993724054598, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.224)" + }, + "parent_node_id": "node_3210", + "improvement_over_parent": null + }, + "node_3212": { + "node_id": "node_3212", + "content": "MODIFICATION: Increase 6 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0093)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 193.58 kg\n Factor of Safety: 0.13\n Max Deflection: 4.73e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.58154812377035, + "fos_buckling": 0.12751962241266898, + "fos_yielding": 2.141942459605599, + "deflection": 0.0047309313559593434, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.618)" + }, + "parent_node_id": "node_3211", + "improvement_over_parent": null + }, + "node_3213": { + "node_id": "node_3213", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0093)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0038)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 236.23 kg\n Factor of Safety: 1.10\n Max Deflection: 1.38e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 236.23351647514374, + "fos_buckling": 1.1004399352757548, + "fos_yielding": 3.1282861611648225, + "deflection": 0.0013767440626408025, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3212", + "improvement_over_parent": null + }, + "node_3214": { + "node_id": "node_3214", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3213", + "improvement_over_parent": null + }, + "node_3215": { + "node_id": "node_3215", + "content": "INITIAL DESIGN (Trace 466)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0014)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0019)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0016)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0025)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 89.93 kg\n Factor of Safety: 0.50\n Max Deflection: 3.73e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 89.93120167942041, + "fos_buckling": 0.49598249699558683, + "fos_yielding": 1.1535576328334, + "deflection": 0.0037335363886817304, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3216": { + "node_id": "node_3216", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0018)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 104.94 kg\n Factor of Safety: 0.58\n Max Deflection: 3.19e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 104.94248819554687, + "fos_buckling": 0.575567657525161, + "fos_yielding": 1.34866613821758, + "deflection": 0.0031934140530265427, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.174)" + }, + "parent_node_id": "node_3215", + "improvement_over_parent": null + }, + "node_3217": { + "node_id": "node_3217", + "content": "MODIFICATION: Increase 0 thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0018)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 107.19 kg\n Factor of Safety: 0.58\n Max Deflection: 3.18e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 107.18903006057005, + "fos_buckling": 0.578194734139562, + "fos_yielding": 1.3548218858973236, + "deflection": 0.0031789045065304298, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.328)" + }, + "parent_node_id": "node_3216", + "improvement_over_parent": null + }, + "node_3218": { + "node_id": "node_3218", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0024)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 140.10 kg\n Factor of Safety: 0.75\n Max Deflection: 2.42e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.09893726068404, + "fos_buckling": 0.7467852825425376, + "fos_yielding": 1.778660149358568, + "deflection": 0.0024214009630666214, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.325)" + }, + "parent_node_id": "node_3217", + "improvement_over_parent": null + }, + "node_3219": { + "node_id": "node_3219", + "content": "MODIFICATION: Increase 3 thickness by 66%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0029)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0038)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 149.31 kg\n Factor of Safety: 0.99\n Max Deflection: 2.18e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 149.30917192360346, + "fos_buckling": 0.985671868184252, + "fos_yielding": 2.836786821614839, + "deflection": 0.0021756141655185027, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.661)" + }, + "parent_node_id": "node_3218", + "improvement_over_parent": null + }, + "node_3220": { + "node_id": "node_3220", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 174.46 kg\n Factor of Safety: 1.12\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.46354538016334, + "fos_buckling": 1.1172214710906523, + "fos_yielding": 3.3131084335420513, + "deflection": 0.001865185773200047, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.181)" + }, + "parent_node_id": "node_3219", + "improvement_over_parent": null + }, + "node_3221": { + "node_id": "node_3221", + "content": "MODIFICATION: Increase all_members thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.01 kg\n Factor of Safety: 1.32\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.00597267009337, + "fos_buckling": 1.323514149550505, + "fos_yielding": 4.136540655528362, + "deflection": 0.0014971596472226501, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.274)" + }, + "parent_node_id": "node_3220", + "improvement_over_parent": null + }, + "node_3222": { + "node_id": "node_3222", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n\nPerformance:\n Mass: 223.18 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.18031554682204, + "fos_buckling": 1.567505033017153, + "fos_yielding": 4.150279488235014, + "deflection": 0.0014509415680973668, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)" + }, + "parent_node_id": "node_3221", + "improvement_over_parent": null + }, + "node_3223": { + "node_id": "node_3223", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3222", + "improvement_over_parent": null + }, + "node_3224": { + "node_id": "node_3224", + "content": "INITIAL DESIGN (Trace 467)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 124.38 kg\n Factor of Safety: 0.05\n Max Deflection: 8.03e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 124.38230954432736, + "fos_buckling": 0.04995276198786416, + "fos_yielding": 1.1775861360044206, + "deflection": 0.008030092549917702, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3225": { + "node_id": "node_3225", + "content": "MODIFICATION: Increase 9 thickness by 61%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0019)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 136.64 kg\n Factor of Safety: 0.05\n Max Deflection: 7.67e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 136.63865400728596, + "fos_buckling": 0.049887699900200616, + "fos_yielding": 1.1760523627081474, + "deflection": 0.007665885881673433, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.608)" + }, + "parent_node_id": "node_3224", + "improvement_over_parent": null + }, + "node_3226": { + "node_id": "node_3226", + "content": "MODIFICATION: Increase 0 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 140.08 kg\n Factor of Safety: 0.05\n Max Deflection: 7.67e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 140.07914379960405, + "fos_buckling": 0.0498694667156522, + "fos_yielding": 1.1756225337160158, + "deflection": 0.007667675641466886, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.443)" + }, + "parent_node_id": "node_3225", + "improvement_over_parent": null + }, + "node_3227": { + "node_id": "node_3227", + "content": "MODIFICATION: Increase 0 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 142.67 kg\n Factor of Safety: 0.05\n Max Deflection: 7.67e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 142.67354746058788, + "fos_buckling": 0.04985572625260156, + "fos_yielding": 1.1752986161157308, + "deflection": 0.00766902526307332, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.239)" + }, + "parent_node_id": "node_3226", + "improvement_over_parent": null + }, + "node_3228": { + "node_id": "node_3228", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 177.30 kg\n Factor of Safety: 1.30\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.3048707498363, + "fos_buckling": 1.2952889411641344, + "fos_yielding": 3.2993920576352114, + "deflection": 0.0018210288918905767, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004493)" + }, + "parent_node_id": "node_3227", + "improvement_over_parent": null + }, + "node_3229": { + "node_id": "node_3229", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 199.36 kg\n Factor of Safety: 1.43\n Max Deflection: 1.62e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 199.35627337954952, + "fos_buckling": 1.429421631625419, + "fos_yielding": 3.7082786406178836, + "deflection": 0.0016218540355979574, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_3228", + "improvement_over_parent": null + }, + "node_3230": { + "node_id": "node_3230", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.12420043370287, + "fos_buckling": 1.5674079678133974, + "fos_yielding": 4.148633945500306, + "deflection": 0.0014512601225020205, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.131)" + }, + "parent_node_id": "node_3229", + "improvement_over_parent": null + }, + "node_3231": { + "node_id": "node_3231", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3230", + "improvement_over_parent": null + }, + "node_3232": { + "node_id": "node_3232", + "content": "INITIAL DESIGN (Trace 468)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3233": { + "node_id": "node_3233", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 204.56 kg\n Factor of Safety: 1.46\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.55741550698562, + "fos_buckling": 1.4595233156671674, + "fos_yielding": 4.182448828410844, + "deflection": 0.0015207943949892345, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_3232", + "improvement_over_parent": null + }, + "node_3234": { + "node_id": "node_3234", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 210.71 kg\n Factor of Safety: 1.34\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 210.71123024528345, + "fos_buckling": 1.3391854819108502, + "fos_yielding": 4.1382372185500955, + "deflection": 0.001495835354402475, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_3233", + "improvement_over_parent": null + }, + "node_3235": { + "node_id": "node_3235", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2595878653797, + "fos_buckling": 1.5680110398324938, + "fos_yielding": 4.151339310951526, + "deflection": 0.0014504370044323108, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_3234", + "improvement_over_parent": null + }, + "node_3236": { + "node_id": "node_3236", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3235", + "improvement_over_parent": null + }, + "node_3237": { + "node_id": "node_3237", + "content": "INITIAL DESIGN (Trace 469)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0012)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0017)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0008)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0009)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0024)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0010)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0023)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0014)]\n\nPerformance:\n Mass: 81.01 kg\n Factor of Safety: 0.46\n Max Deflection: 4.25e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 81.00561155991075, + "fos_buckling": 0.46394317647352906, + "fos_yielding": 1.7558693369999776, + "deflection": 0.0042477038689832615, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3238": { + "node_id": "node_3238", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0016)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0010)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0032)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0030)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0030)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0019)]\n\nPerformance:\n Mass: 105.69 kg\n Factor of Safety: 0.59\n Max Deflection: 3.26e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 105.69168315921591, + "fos_buckling": 0.5921564630750199, + "fos_yielding": 2.2884035158001, + "deflection": 0.003257014121450589, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.318)" + }, + "parent_node_id": "node_3237", + "improvement_over_parent": null + }, + "node_3239": { + "node_id": "node_3239", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0020)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0041)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0024)]\n\nPerformance:\n Mass: 134.38 kg\n Factor of Safety: 0.73\n Max Deflection: 2.56e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.38144195053178, + "fos_buckling": 0.7336418693947979, + "fos_yielding": 2.9056822699303453, + "deflection": 0.0025628269162437795, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_3238", + "improvement_over_parent": null + }, + "node_3240": { + "node_id": "node_3240", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n\nPerformance:\n Mass: 156.88 kg\n Factor of Safety: 0.84\n Max Deflection: 2.20e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.880111294029, + "fos_buckling": 0.839029648144101, + "fos_yielding": 3.3884730081140915, + "deflection": 0.002195971342677086, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.179)" + }, + "parent_node_id": "node_3239", + "improvement_over_parent": null + }, + "node_3241": { + "node_id": "node_3241", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 163.83 kg\n Factor of Safety: 0.88\n Max Deflection: 2.16e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 163.82915373956672, + "fos_buckling": 0.8779685983459083, + "fos_yielding": 3.3400326232401407, + "deflection": 0.0021573453331325556, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002031)" + }, + "parent_node_id": "node_3240", + "improvement_over_parent": null + }, + "node_3242": { + "node_id": "node_3242", + "content": "MODIFICATION: Increase 10 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0032)]\n\nPerformance:\n Mass: 167.33 kg\n Factor of Safety: 0.85\n Max Deflection: 2.15e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.3330823607533, + "fos_buckling": 0.8450641084716412, + "fos_yielding": 3.3313080204290424, + "deflection": 0.0021510502537448197, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.567)" + }, + "parent_node_id": "node_3241", + "improvement_over_parent": null + }, + "node_3243": { + "node_id": "node_3243", + "content": "MODIFICATION: Increase 0 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0032)]\n\nPerformance:\n Mass: 171.79 kg\n Factor of Safety: 0.87\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.78561186367955, + "fos_buckling": 0.8708593674775622, + "fos_yielding": 3.3560713176598673, + "deflection": 0.002024625313371137, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.477)" + }, + "parent_node_id": "node_3242", + "improvement_over_parent": null + }, + "node_3244": { + "node_id": "node_3244", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0040)]\n\nPerformance:\n Mass: 212.98 kg\n Factor of Safety: 1.04\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 212.97721934086732, + "fos_buckling": 1.0432609927191203, + "fos_yielding": 4.156370279712019, + "deflection": 0.001633755334644993, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.263)" + }, + "parent_node_id": "node_3243", + "improvement_over_parent": null + }, + "node_3245": { + "node_id": "node_3245", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3244", + "improvement_over_parent": null + }, + "node_3246": { + "node_id": "node_3246", + "content": "INITIAL DESIGN (Trace 470)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 158.48 kg\n Factor of Safety: 0.13\n Max Deflection: 5.25e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.47888435734686, + "fos_buckling": 0.1280735181133232, + "fos_yielding": 2.1309388221375496, + "deflection": 0.005250115470758906, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3247": { + "node_id": "node_3247", + "content": "MODIFICATION: Increase 6 thickness by 46%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 167.52 kg\n Factor of Safety: 0.13\n Max Deflection: 4.99e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 167.52263965951303, + "fos_buckling": 0.1280735181133232, + "fos_yielding": 2.13093882213755, + "deflection": 0.004991089051897209, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.464)" + }, + "parent_node_id": "node_3246", + "improvement_over_parent": null + }, + "node_3248": { + "node_id": "node_3248", + "content": "MODIFICATION: Increase 1 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 170.53 kg\n Factor of Safety: 0.13\n Max Deflection: 4.99e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.5284425681815, + "fos_buckling": 0.12803269857653243, + "fos_yielding": 2.1316257596863264, + "deflection": 0.00499189331634808, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.227)" + }, + "parent_node_id": "node_3247", + "improvement_over_parent": null + }, + "node_3249": { + "node_id": "node_3249", + "content": "MODIFICATION: Increase 5 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 171.41 kg\n Factor of Safety: 0.13\n Max Deflection: 4.85e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.40675573447993, + "fos_buckling": 0.12800885520672745, + "fos_yielding": 2.1503113397521636, + "deflection": 0.004848282457097042, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.183)" + }, + "parent_node_id": "node_3248", + "improvement_over_parent": null + }, + "node_3250": { + "node_id": "node_3250", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.06 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.05872408585333, + "fos_buckling": 1.5233312920391182, + "fos_yielding": 4.196609345058286, + "deflection": 0.0014700604293655733, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3249", + "improvement_over_parent": null + }, + "node_3251": { + "node_id": "node_3251", + "content": "MODIFICATION: Increase 2 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 214.63 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 214.6337069601138, + "fos_buckling": 1.5232388582146923, + "fos_yielding": 4.19645603449442, + "deflection": 0.0014701451467851053, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.212)" + }, + "parent_node_id": "node_3250", + "improvement_over_parent": null + }, + "node_3252": { + "node_id": "node_3252", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.25 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24681157487447, + "fos_buckling": 1.5679856890783177, + "fos_yielding": 4.1513420535447825, + "deflection": 0.0014504283186091722, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_3251", + "improvement_over_parent": null + }, + "node_3253": { + "node_id": "node_3253", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3252", + "improvement_over_parent": null + }, + "node_3254": { + "node_id": "node_3254", + "content": "INITIAL DESIGN (Trace 471)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 209.12 kg\n Factor of Safety: 1.17\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.1203732428383, + "fos_buckling": 1.172438183172625, + "fos_yielding": 3.362689073975643, + "deflection": 0.0015397748583680577, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3255": { + "node_id": "node_3255", + "content": "MODIFICATION: Increase 6 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.52 kg\n Factor of Safety: 1.36\n Max Deflection: 1.51e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.5197879464406, + "fos_buckling": 1.3641552296221635, + "fos_yielding": 4.158785943656205, + "deflection": 0.0015095745051616916, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.490)" + }, + "parent_node_id": "node_3254", + "improvement_over_parent": null + }, + "node_3256": { + "node_id": "node_3256", + "content": "MODIFICATION: Increase 5 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 219.86 kg\n Factor of Safety: 1.48\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 219.8567596003482, + "fos_buckling": 1.4810476754118387, + "fos_yielding": 4.154336124597488, + "deflection": 0.0015033746838418348, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.305)" + }, + "parent_node_id": "node_3255", + "improvement_over_parent": null + }, + "node_3257": { + "node_id": "node_3257", + "content": "MODIFICATION: Increase 1 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25756329312458, + "fos_buckling": 1.5680163173346389, + "fos_yielding": 4.151357065699088, + "deflection": 0.0014504517832936677, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.264)" + }, + "parent_node_id": "node_3256", + "improvement_over_parent": null + }, + "node_3258": { + "node_id": "node_3258", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3257", + "improvement_over_parent": null + }, + "node_3259": { + "node_id": "node_3259", + "content": "INITIAL DESIGN (Trace 472)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0028)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 151.22 kg\n Factor of Safety: 0.83\n Max Deflection: 2.17e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 151.2239980357587, + "fos_buckling": 0.8279251314682616, + "fos_yielding": 1.9886641122601052, + "deflection": 0.0021656997640141194, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3260": { + "node_id": "node_3260", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 185.91 kg\n Factor of Safety: 1.00\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 185.90507011033384, + "fos_buckling": 1.00408322298792, + "fos_yielding": 2.4569862157098554, + "deflection": 0.0017528992922659734, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.248)" + }, + "parent_node_id": "node_3259", + "improvement_over_parent": null + }, + "node_3261": { + "node_id": "node_3261", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 189.09 kg\n Factor of Safety: 1.01\n Max Deflection: 1.74e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.09104491231497, + "fos_buckling": 1.0086754945150904, + "fos_yielding": 2.468223479297906, + "deflection": 0.0017449187380107717, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001747)" + }, + "parent_node_id": "node_3260", + "improvement_over_parent": null + }, + "node_3262": { + "node_id": "node_3262", + "content": "MODIFICATION: Increase 4 thickness by 57%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 191.86 kg\n Factor of Safety: 1.01\n Max Deflection: 1.75e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.86188165696026, + "fos_buckling": 1.00786346067632, + "fos_yielding": 2.4662364368866085, + "deflection": 0.0017463246160056127, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.575)" + }, + "parent_node_id": "node_3261", + "improvement_over_parent": null + }, + "node_3263": { + "node_id": "node_3263", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0040)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 214.07 kg\n Factor of Safety: 1.11\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.06584336099831, + "fos_buckling": 1.1149156045116437, + "fos_yielding": 2.760701918855374, + "deflection": 0.0015600559296929596, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.127)" + }, + "parent_node_id": "node_3262", + "improvement_over_parent": null + }, + "node_3264": { + "node_id": "node_3264", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3263", + "improvement_over_parent": null + }, + "node_3265": { + "node_id": "node_3265", + "content": "INITIAL DESIGN (Trace 473)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0017)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n\nPerformance:\n Mass: 109.03 kg\n Factor of Safety: 0.09\n Max Deflection: 7.57e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.03292031551906, + "fos_buckling": 0.08997827752634524, + "fos_yielding": 1.4239712833819649, + "deflection": 0.007573341958115092, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3266": { + "node_id": "node_3266", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 134.93 kg\n Factor of Safety: 0.11\n Max Deflection: 6.13e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.9291132476834, + "fos_buckling": 0.10815883634688522, + "fos_yielding": 1.7583703907441381, + "deflection": 0.006127718799950396, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.255)" + }, + "parent_node_id": "node_3265", + "improvement_over_parent": null + }, + "node_3267": { + "node_id": "node_3267", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n\nPerformance:\n Mass: 141.95 kg\n Factor of Safety: 0.11\n Max Deflection: 6.13e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.9480531175517, + "fos_buckling": 0.10807819558570397, + "fos_yielding": 1.7570593898907874, + "deflection": 0.006134006201150632, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002053)" + }, + "parent_node_id": "node_3266", + "improvement_over_parent": null + }, + "node_3268": { + "node_id": "node_3268", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0022)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 176.71 kg\n Factor of Safety: 0.83\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.70840729585183, + "fos_buckling": 0.8313442552563328, + "fos_yielding": 3.36061041193577, + "deflection": 0.0019371916149350762, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004569)" + }, + "parent_node_id": "node_3267", + "improvement_over_parent": null + }, + "node_3269": { + "node_id": "node_3269", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.02 kg\n Factor of Safety: 0.99\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.01909854877368, + "fos_buckling": 0.9853772857546366, + "fos_yielding": 4.123229838122544, + "deflection": 0.0015794246888739163, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.250)" + }, + "parent_node_id": "node_3268", + "improvement_over_parent": null + }, + "node_3270": { + "node_id": "node_3270", + "content": "MODIFICATION: Increase 0 thickness by 62%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.50 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.49572668894263, + "fos_buckling": 1.5688543701049695, + "fos_yielding": 4.156211101409208, + "deflection": 0.0014488960298979525, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.618)" + }, + "parent_node_id": "node_3269", + "improvement_over_parent": null + }, + "node_3271": { + "node_id": "node_3271", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3270", + "improvement_over_parent": null + }, + "node_3272": { + "node_id": "node_3272", + "content": "INITIAL DESIGN (Trace 474)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 168.69 kg\n Factor of Safety: 0.24\n Max Deflection: 7.76e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.69250247865767, + "fos_buckling": 0.23599760806095232, + "fos_yielding": 3.909538421107618, + "deflection": 7758110607268.246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3273": { + "node_id": "node_3273", + "content": "MODIFICATION: Increase 5 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 176.10 kg\n Factor of Safety: 0.24\n Max Deflection: 7.76e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.10086808307295, + "fos_buckling": 0.23599760806095232, + "fos_yielding": 4.29475573275585, + "deflection": 7758110607268.246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.353)" + }, + "parent_node_id": "node_3272", + "improvement_over_parent": null + }, + "node_3274": { + "node_id": "node_3274", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 179.66 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.65527541877097, + "fos_buckling": 0.06036589775968844, + "fos_yielding": 1.4758705801390866, + "deflection": 0.006103186882531415, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_3273", + "improvement_over_parent": null + }, + "node_3275": { + "node_id": "node_3275", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26632966153167, + "fos_buckling": 1.568044223232958, + "fos_yielding": 4.151354077485346, + "deflection": 0.0014504042810722282, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_3274", + "improvement_over_parent": null + }, + "node_3276": { + "node_id": "node_3276", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3275", + "improvement_over_parent": null + }, + "node_3277": { + "node_id": "node_3277", + "content": "INITIAL DESIGN (Trace 475)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 83.69 kg\n Factor of Safety: 0.04\n Max Deflection: 1.95e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 83.68823637215392, + "fos_buckling": 0.0404458334181773, + "fos_yielding": 0.7736751525620736, + "deflection": 0.019460173014564847, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3278": { + "node_id": "node_3278", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 99.62 kg\n Factor of Safety: 0.05\n Max Deflection: 1.63e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 99.61569902602803, + "fos_buckling": 0.04712961935084, + "fos_yielding": 0.920604589118983, + "deflection": 0.016347028915870598, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.203)" + }, + "parent_node_id": "node_3277", + "improvement_over_parent": null + }, + "node_3279": { + "node_id": "node_3279", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n\nPerformance:\n Mass: 117.85 kg\n Factor of Safety: 0.05\n Max Deflection: 1.38e-02 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 117.84781284720643, + "fos_buckling": 0.05438580580794306, + "fos_yielding": 1.0886611601023697, + "deflection": 0.01381584285160422, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.198)" + }, + "parent_node_id": "node_3278", + "improvement_over_parent": null + }, + "node_3280": { + "node_id": "node_3280", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 134.50 kg\n Factor of Safety: 0.06\n Max Deflection: 1.21e-02 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.49832437461677, + "fos_buckling": 0.06064574017880809, + "fos_yielding": 1.2420103921038828, + "deflection": 0.012103283589810967, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_3279", + "improvement_over_parent": null + }, + "node_3281": { + "node_id": "node_3281", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 177.15 kg\n Factor of Safety: 0.06\n Max Deflection: 7.06e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.15029272599017, + "fos_buckling": 0.060371682632505426, + "fos_yielding": 1.2542708529564346, + "deflection": 0.007062189261629462, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3280", + "improvement_over_parent": null + }, + "node_3282": { + "node_id": "node_3282", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 220.76 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.76134696875087, + "fos_buckling": 1.5677840836420232, + "fos_yielding": 4.156894455097111, + "deflection": 0.0014535131192683725, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_3281", + "improvement_over_parent": null + }, + "node_3283": { + "node_id": "node_3283", + "content": "MODIFICATION: Increase 8 thickness by 44%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0044)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 225.53 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 225.52723962712162, + "fos_buckling": 1.5653936786780913, + "fos_yielding": 4.158110926387091, + "deflection": 0.0014482359036797302, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.437)" + }, + "parent_node_id": "node_3282", + "improvement_over_parent": null + }, + "node_3284": { + "node_id": "node_3284", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3283", + "improvement_over_parent": null + }, + "node_3285": { + "node_id": "node_3285", + "content": "INITIAL DESIGN (Trace 476)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 153.99 kg\n Factor of Safety: 1.03\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.98931067632628, + "fos_buckling": 1.0253357573894013, + "fos_yielding": 2.8878691577397873, + "deflection": 0.00202300055144176, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3286": { + "node_id": "node_3286", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 182.70 kg\n Factor of Safety: 1.20\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.6987800341366, + "fos_buckling": 1.1969745070204643, + "fos_yielding": 3.435262455175584, + "deflection": 0.0017127445583403637, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_3285", + "improvement_over_parent": null + }, + "node_3287": { + "node_id": "node_3287", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 187.37 kg\n Factor of Safety: 1.17\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.36893133916848, + "fos_buckling": 1.1735972231884648, + "fos_yielding": 3.3681707126355094, + "deflection": 0.0016524569505675974, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002124)" + }, + "parent_node_id": "node_3286", + "improvement_over_parent": null + }, + "node_3288": { + "node_id": "node_3288", + "content": "MODIFICATION: Increase 6 thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0068)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n\nPerformance:\n Mass: 198.79 kg\n Factor of Safety: 1.17\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.7936313400027, + "fos_buckling": 1.1735001168313688, + "fos_yielding": 3.3678920218023003, + "deflection": 0.0015352551666577448, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.325)" + }, + "parent_node_id": "node_3287", + "improvement_over_parent": null + }, + "node_3289": { + "node_id": "node_3289", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0040)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0068)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 206.57 kg\n Factor of Safety: 1.18\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.5676050650298, + "fos_buckling": 1.1750718242093647, + "fos_yielding": 3.372402750572616, + "deflection": 0.0015253797243182815, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002293)" + }, + "parent_node_id": "node_3288", + "improvement_over_parent": null + }, + "node_3290": { + "node_id": "node_3290", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0076)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 228.80 kg\n Factor of Safety: 1.29\n Max Deflection: 1.38e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 228.79837061057393, + "fos_buckling": 1.2875257774671645, + "fos_yielding": 3.7445482294579073, + "deflection": 0.0013792769822759514, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_3289", + "improvement_over_parent": null + }, + "node_3291": { + "node_id": "node_3291", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3290", + "improvement_over_parent": null + }, + "node_3292": { + "node_id": "node_3292", + "content": "INITIAL DESIGN (Trace 477)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 164.52 kg\n Factor of Safety: 1.09\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 164.5205673342762, + "fos_buckling": 1.088528705696448, + "fos_yielding": 3.096065210098989, + "deflection": 0.0019636731171772553, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3293": { + "node_id": "node_3293", + "content": "MODIFICATION: Increase 1 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 166.44 kg\n Factor of Safety: 1.09\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.43552182234345, + "fos_buckling": 1.09294640009127, + "fos_yielding": 3.108630308155735, + "deflection": 0.0019141266550283323, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.179)" + }, + "parent_node_id": "node_3292", + "improvement_over_parent": null + }, + "node_3294": { + "node_id": "node_3294", + "content": "MODIFICATION: Increase 6 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0033)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0043)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n\nPerformance:\n Mass: 170.07 kg\n Factor of Safety: 1.25\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 170.07072459322998, + "fos_buckling": 1.2499009998580497, + "fos_yielding": 3.1654967318247875, + "deflection": 0.0018976793365488912, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.199)" + }, + "parent_node_id": "node_3293", + "improvement_over_parent": null + }, + "node_3295": { + "node_id": "node_3295", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 189.75 kg\n Factor of Safety: 1.37\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.74768278366963, + "fos_buckling": 1.3715949840997126, + "fos_yielding": 3.530497536461422, + "deflection": 0.0017030020529154079, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.125)" + }, + "parent_node_id": "node_3294", + "improvement_over_parent": null + }, + "node_3296": { + "node_id": "node_3296", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.09 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.09094402820773, + "fos_buckling": 1.5671069899674965, + "fos_yielding": 4.1484172131358, + "deflection": 0.00145151651450175, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.193)" + }, + "parent_node_id": "node_3295", + "improvement_over_parent": null + }, + "node_3297": { + "node_id": "node_3297", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3296", + "improvement_over_parent": null + }, + "node_3298": { + "node_id": "node_3298", + "content": "INITIAL DESIGN (Trace 478)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0029)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 104.93 kg\n Factor of Safety: 0.04\n Max Deflection: 9.73e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 104.92513459650274, + "fos_buckling": 0.04160962421997712, + "fos_yielding": 0.9559856652168512, + "deflection": 0.00973056314050179, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3299": { + "node_id": "node_3299", + "content": "MODIFICATION: Increase all_members thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 128.16 kg\n Factor of Safety: 0.05\n Max Deflection: 7.98e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.15501143069875, + "fos_buckling": 0.04946371588329167, + "fos_yielding": 1.1644026633751225, + "deflection": 0.007982570473050439, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.236)" + }, + "parent_node_id": "node_3298", + "improvement_over_parent": null + }, + "node_3300": { + "node_id": "node_3300", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 162.45 kg\n Factor of Safety: 1.00\n Max Deflection: 2.03e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.44893533308772, + "fos_buckling": 0.9988605524616145, + "fos_yielding": 3.0761002903498005, + "deflection": 0.0020261673478990964, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004446)" + }, + "parent_node_id": "node_3299", + "improvement_over_parent": null + }, + "node_3301": { + "node_id": "node_3301", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 206.99 kg\n Factor of Safety: 1.24\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 206.9901796118951, + "fos_buckling": 1.239911624045253, + "fos_yielding": 3.9263453634984233, + "deflection": 0.0015934913533901041, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.299)" + }, + "parent_node_id": "node_3300", + "improvement_over_parent": null + }, + "node_3302": { + "node_id": "node_3302", + "content": "MODIFICATION: Increase 10 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0080)]\n\nPerformance:\n Mass: 221.38 kg\n Factor of Safety: 1.24\n Max Deflection: 1.49e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.37948409533868, + "fos_buckling": 1.2437356746678425, + "fos_yielding": 3.919651034492669, + "deflection": 0.0014908755051979904, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.377)" + }, + "parent_node_id": "node_3301", + "improvement_over_parent": null + }, + "node_3303": { + "node_id": "node_3303", + "content": "MODIFICATION: Increase 6 thickness by 24%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0080)]\n\nPerformance:\n Mass: 226.80 kg\n Factor of Safety: 1.15\n Max Deflection: 1.47e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 226.80470692065347, + "fos_buckling": 1.1516975758804946, + "fos_yielding": 4.185146758638562, + "deflection": 0.0014726044232203984, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.238)" + }, + "parent_node_id": "node_3302", + "improvement_over_parent": null + }, + "node_3304": { + "node_id": "node_3304", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3303", + "improvement_over_parent": null + }, + "node_3305": { + "node_id": "node_3305", + "content": "INITIAL DESIGN (Trace 479)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3306": { + "node_id": "node_3306", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n\nPerformance:\n Mass: 166.30 kg\n Factor of Safety: 0.93\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 166.30008775774397, + "fos_buckling": 0.934341266720909, + "fos_yielding": 3.286772656191596, + "deflection": 0.0018845680638055516, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001846)" + }, + "parent_node_id": "node_3305", + "improvement_over_parent": null + }, + "node_3307": { + "node_id": "node_3307", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 176.25 kg\n Factor of Safety: 1.23\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.24554359166277, + "fos_buckling": 1.2326894880378072, + "fos_yielding": 3.2964091403356623, + "deflection": 0.0018264000507879276, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002405)" + }, + "parent_node_id": "node_3306", + "improvement_over_parent": null + }, + "node_3308": { + "node_id": "node_3308", + "content": "MODIFICATION: Increase 2 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n\nPerformance:\n Mass: 176.98 kg\n Factor of Safety: 1.29\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.9769449564612, + "fos_buckling": 1.2931083096503895, + "fos_yielding": 3.2935122071883924, + "deflection": 0.0018244065434710713, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.376)" + }, + "parent_node_id": "node_3307", + "improvement_over_parent": null + }, + "node_3309": { + "node_id": "node_3309", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 223.24 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.24392846151918, + "fos_buckling": 1.567927726631287, + "fos_yielding": 4.151100905525156, + "deflection": 0.0014505245189099735, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_3308", + "improvement_over_parent": null + }, + "node_3310": { + "node_id": "node_3310", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3309", + "improvement_over_parent": null + }, + "node_3311": { + "node_id": "node_3311", + "content": "INITIAL DESIGN (Trace 480)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0025)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0033)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0011)]\n\nPerformance:\n Mass: 96.45 kg\n Factor of Safety: 0.15\n Max Deflection: 1.15e+13 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 96.45352011457655, + "fos_buckling": 0.1485329642145762, + "fos_yielding": 2.2521981244912856, + "deflection": 11474858975555.393, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3312": { + "node_id": "node_3312", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n\nPerformance:\n Mass: 109.48 kg\n Factor of Safety: 0.17\n Max Deflection: 1.44e+13 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 109.48450531078555, + "fos_buckling": 0.1663420957607604, + "fos_yielding": 1.08126794842885, + "deflection": 14448525266042.812, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.143)" + }, + "parent_node_id": "node_3311", + "improvement_over_parent": null + }, + "node_3313": { + "node_id": "node_3313", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0013)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0039)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0012)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0017)]\n\nPerformance:\n Mass: 113.57 kg\n Factor of Safety: 0.27\n Max Deflection: 4.82e+13 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 113.57231735409832, + "fos_buckling": 0.26653532899474536, + "fos_yielding": 0.38428821746952385, + "deflection": 48228286147994.66, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001651)" + }, + "parent_node_id": "node_3312", + "improvement_over_parent": null + }, + "node_3314": { + "node_id": "node_3314", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 145.90 kg\n Factor of Safety: 0.07\n Max Deflection: 2.32e+13 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 145.90263119873316, + "fos_buckling": 0.0741510024175473, + "fos_yielding": 1.08126794842885, + "deflection": 23223604665228.28, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_3313", + "improvement_over_parent": null + }, + "node_3315": { + "node_id": "node_3315", + "content": "MODIFICATION: Increase 8 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0035)]\n\nPerformance:\n Mass: 148.69 kg\n Factor of Safety: 0.41\n Max Deflection: 5.08e+12 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 148.68584036196089, + "fos_buckling": 0.4135244165085154, + "fos_yielding": 3.8267143551412923, + "deflection": 5081662851926.882, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.603)" + }, + "parent_node_id": "node_3314", + "improvement_over_parent": null + }, + "node_3316": { + "node_id": "node_3316", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0035)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 153.10 kg\n Factor of Safety: 0.11\n Max Deflection: 6.42e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.1019697015466, + "fos_buckling": 0.11221855125702274, + "fos_yielding": 1.4004364111342955, + "deflection": 0.006419754564090905, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001999)" + }, + "parent_node_id": "node_3315", + "improvement_over_parent": null + }, + "node_3317": { + "node_id": "node_3317", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0035)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n\nPerformance:\n Mass: 189.52 kg\n Factor of Safety: 1.32\n Max Deflection: 1.70e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.51581524662316, + "fos_buckling": 1.3170009496148507, + "fos_yielding": 3.53900950858906, + "deflection": 0.0016977356179780645, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004804)" + }, + "parent_node_id": "node_3316", + "improvement_over_parent": null + }, + "node_3318": { + "node_id": "node_3318", + "content": "MODIFICATION: Increase all_members thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0041)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 221.91 kg\n Factor of Safety: 1.49\n Max Deflection: 1.45e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 221.90655443051918, + "fos_buckling": 1.4893072816557347, + "fos_yielding": 4.142497931660776, + "deflection": 0.0014527836684551868, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.188)" + }, + "parent_node_id": "node_3317", + "improvement_over_parent": null + }, + "node_3319": { + "node_id": "node_3319", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3318", + "improvement_over_parent": null + }, + "node_3320": { + "node_id": "node_3320", + "content": "INITIAL DESIGN (Trace 481)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0023)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0028)]\n\nPerformance:\n Mass: 147.27 kg\n Factor of Safety: 0.91\n Max Deflection: 2.28e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 147.2665814747382, + "fos_buckling": 0.9140142852142088, + "fos_yielding": 2.8990205575717263, + "deflection": 0.0022765762951756858, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3321": { + "node_id": "node_3321", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n\nPerformance:\n Mass: 165.80 kg\n Factor of Safety: 1.02\n Max Deflection: 2.02e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.8046535202159, + "fos_buckling": 1.0187338693485621, + "fos_yielding": 3.2661947485101233, + "deflection": 0.0020233123883709736, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_3320", + "improvement_over_parent": null + }, + "node_3322": { + "node_id": "node_3322", + "content": "MODIFICATION: Increase 9 thickness by 55%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 178.37 kg\n Factor of Safety: 1.16\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.37046715569082, + "fos_buckling": 1.1573843790866003, + "fos_yielding": 3.3177808994193416, + "deflection": 0.0018136115268270923, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.548)" + }, + "parent_node_id": "node_3321", + "improvement_over_parent": null + }, + "node_3323": { + "node_id": "node_3323", + "content": "MODIFICATION: Increase 8 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 182.31 kg\n Factor of Safety: 1.15\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.30881545887496, + "fos_buckling": 1.151240342847947, + "fos_yielding": 3.3001682838991364, + "deflection": 0.0018015966941445347, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.603)" + }, + "parent_node_id": "node_3322", + "improvement_over_parent": null + }, + "node_3324": { + "node_id": "node_3324", + "content": "MODIFICATION: Increase 5 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n\nPerformance:\n Mass: 188.02 kg\n Factor of Safety: 1.13\n Max Deflection: 1.77e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 188.01638343576087, + "fos_buckling": 1.1281195322948339, + "fos_yielding": 3.6773631170349432, + "deflection": 0.0017744134131696264, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.295)" + }, + "parent_node_id": "node_3323", + "improvement_over_parent": null + }, + "node_3325": { + "node_id": "node_3325", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0053)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 191.13 kg\n Factor of Safety: 1.20\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 191.1334158409338, + "fos_buckling": 1.1950976801539557, + "fos_yielding": 3.643916515473507, + "deflection": 0.0017550404974849714, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001706)" + }, + "parent_node_id": "node_3324", + "improvement_over_parent": null + }, + "node_3326": { + "node_id": "node_3326", + "content": "MODIFICATION: Increase all_members thickness by 15%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 218.15 kg\n Factor of Safety: 1.33\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 218.14796320934974, + "fos_buckling": 1.3305242290688333, + "fos_yielding": 4.1559236875811045, + "deflection": 0.001539476541341562, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.155)" + }, + "parent_node_id": "node_3325", + "improvement_over_parent": null + }, + "node_3327": { + "node_id": "node_3327", + "content": "MODIFICATION: Increase 1 thickness by 45%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.2253109687778, + "fos_buckling": 1.567849774233443, + "fos_yielding": 4.150957332751985, + "deflection": 0.0014506736421898135, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.447)" + }, + "parent_node_id": "node_3326", + "improvement_over_parent": null + }, + "node_3328": { + "node_id": "node_3328", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3327", + "improvement_over_parent": null + }, + "node_3329": { + "node_id": "node_3329", + "content": "INITIAL DESIGN (Trace 482)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0022)]\n\nPerformance:\n Mass: 121.37 kg\n Factor of Safety: 0.05\n Max Deflection: 8.59e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 121.36709176730608, + "fos_buckling": 0.04810025281889613, + "fos_yielding": 1.1272455879049215, + "deflection": 0.008585064169400218, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3330": { + "node_id": "node_3330", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0026)]\n\nPerformance:\n Mass: 144.08 kg\n Factor of Safety: 0.06\n Max Deflection: 7.24e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.0772702588536, + "fos_buckling": 0.055567358651507706, + "fos_yielding": 1.3348563840663326, + "deflection": 0.007240742262224313, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_3329", + "improvement_over_parent": null + }, + "node_3331": { + "node_id": "node_3331", + "content": "MODIFICATION: Increase 9 thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0034)]\n\nPerformance:\n Mass: 150.20 kg\n Factor of Safety: 0.06\n Max Deflection: 7.01e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 150.20027652477853, + "fos_buckling": 0.05553122930808484, + "fos_yielding": 1.3339884737338907, + "deflection": 0.007014678225946133, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.314)" + }, + "parent_node_id": "node_3330", + "improvement_over_parent": null + }, + "node_3332": { + "node_id": "node_3332", + "content": "MODIFICATION: Increase 9 thickness by 48%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 161.94 kg\n Factor of Safety: 0.06\n Max Deflection: 6.76e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.93891046539358, + "fos_buckling": 0.05546209566435565, + "fos_yielding": 1.3323277238273774, + "deflection": 0.006763482028552289, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.477)" + }, + "parent_node_id": "node_3331", + "improvement_over_parent": null + }, + "node_3333": { + "node_id": "node_3333", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0028)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0052)]\n\nPerformance:\n Mass: 201.25 kg\n Factor of Safety: 1.44\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 201.25264901444945, + "fos_buckling": 1.4403429540625363, + "fos_yielding": 3.7437412299310506, + "deflection": 0.0016068260876991212, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005153)" + }, + "parent_node_id": "node_3332", + "improvement_over_parent": null + }, + "node_3334": { + "node_id": "node_3334", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.23 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22899447071023, + "fos_buckling": 1.5676476108919362, + "fos_yielding": 4.150918949270181, + "deflection": 0.0014506440886538862, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.120)" + }, + "parent_node_id": "node_3333", + "improvement_over_parent": null + }, + "node_3335": { + "node_id": "node_3335", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3334", + "improvement_over_parent": null + }, + "node_3336": { + "node_id": "node_3336", + "content": "INITIAL DESIGN (Trace 483)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n\nPerformance:\n Mass: 153.35 kg\n Factor of Safety: 0.79\n Max Deflection: 2.33e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 153.34678392057103, + "fos_buckling": 0.7867926924929127, + "fos_yielding": 3.2405928475126813, + "deflection": 0.0023279148400196696, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3337": { + "node_id": "node_3337", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 156.09 kg\n Factor of Safety: 0.70\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.09081820890003, + "fos_buckling": 0.6978820083699111, + "fos_yielding": 3.173840974079227, + "deflection": 0.0022541960998020767, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001487)" + }, + "parent_node_id": "node_3336", + "improvement_over_parent": null + }, + "node_3338": { + "node_id": "node_3338", + "content": "MODIFICATION: Increase 7 thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0022)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0046)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0025)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0043)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n\nPerformance:\n Mass: 157.79 kg\n Factor of Safety: 0.64\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.7924465660379, + "fos_buckling": 0.6369083565894292, + "fos_yielding": 3.1673113834913047, + "deflection": 0.0022474050010252, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.280)" + }, + "parent_node_id": "node_3337", + "improvement_over_parent": null + }, + "node_3339": { + "node_id": "node_3339", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0025)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0028)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n\nPerformance:\n Mass: 177.58 kg\n Factor of Safety: 0.71\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.58134360631934, + "fos_buckling": 0.7052615484677421, + "fos_yielding": 3.561357456899998, + "deflection": 0.0019974216283099545, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.135)" + }, + "parent_node_id": "node_3338", + "improvement_over_parent": null + }, + "node_3340": { + "node_id": "node_3340", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 204.76 kg\n Factor of Safety: 0.80\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 204.75822410962815, + "fos_buckling": 0.795218677980395, + "fos_yielding": 4.101254877890388, + "deflection": 0.001732761066032537, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.167)" + }, + "parent_node_id": "node_3339", + "improvement_over_parent": null + }, + "node_3341": { + "node_id": "node_3341", + "content": "MODIFICATION: Increase 0 thickness by 40%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0029)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 209.58 kg\n Factor of Safety: 1.05\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 209.58332166972536, + "fos_buckling": 1.0505012019622637, + "fos_yielding": 4.123551062615836, + "deflection": 0.001651725008419627, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.404)" + }, + "parent_node_id": "node_3340", + "improvement_over_parent": null + }, + "node_3342": { + "node_id": "node_3342", + "content": "MODIFICATION: Increase 1 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 215.00 kg\n Factor of Safety: 0.98\n Max Deflection: 1.55e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 215.00381208837183, + "fos_buckling": 0.976093051034853, + "fos_yielding": 4.118234638009434, + "deflection": 0.0015511885585713426, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.490)" + }, + "parent_node_id": "node_3341", + "improvement_over_parent": null + }, + "node_3343": { + "node_id": "node_3343", + "content": "MODIFICATION: Increase 3 thickness by 47%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0090)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0033)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 229.36 kg\n Factor of Safety: 0.66\n Max Deflection: 1.53e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 229.36011471985734, + "fos_buckling": 0.656573957616809, + "fos_yielding": 4.829065186438746, + "deflection": 0.0015290203603745994, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.473)" + }, + "parent_node_id": "node_3342", + "improvement_over_parent": null + }, + "node_3344": { + "node_id": "node_3344", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3343", + "improvement_over_parent": null + }, + "node_3345": { + "node_id": "node_3345", + "content": "INITIAL DESIGN (Trace 484)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 189.10 kg\n Factor of Safety: 1.40\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 189.09587565421452, + "fos_buckling": 1.399457912217849, + "fos_yielding": 3.780687746064564, + "deflection": 0.0016414038939629651, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3346": { + "node_id": "node_3346", + "content": "MODIFICATION: Increase 8 thickness by 19%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n\nPerformance:\n Mass: 190.36 kg\n Factor of Safety: 1.40\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.35641934186407, + "fos_buckling": 1.3992713845051727, + "fos_yielding": 3.780687746064564, + "deflection": 0.0016372638988105198, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.189)" + }, + "parent_node_id": "node_3345", + "improvement_over_parent": null + }, + "node_3347": { + "node_id": "node_3347", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 198.11 kg\n Factor of Safety: 1.43\n Max Deflection: 1.61e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.11480303450602, + "fos_buckling": 1.426648296016483, + "fos_yielding": 3.7392480677253355, + "deflection": 0.0016140154762363686, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002288)" + }, + "parent_node_id": "node_3346", + "improvement_over_parent": null + }, + "node_3348": { + "node_id": "node_3348", + "content": "MODIFICATION: Increase 9 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0018)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0055)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0051)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0020)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0071)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n\nPerformance:\n Mass: 211.33 kg\n Factor of Safety: 1.41\n Max Deflection: 1.50e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.32575996983135, + "fos_buckling": 1.4083606721027855, + "fos_yielding": 3.7348105099098388, + "deflection": 0.0015004054168482237, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.387)" + }, + "parent_node_id": "node_3347", + "improvement_over_parent": null + }, + "node_3349": { + "node_id": "node_3349", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0079)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 234.38 kg\n Factor of Safety: 1.52\n Max Deflection: 1.35e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 234.37866681747442, + "fos_buckling": 1.5243324606255078, + "fos_yielding": 4.144458202134243, + "deflection": 0.0013549212104104567, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.121)" + }, + "parent_node_id": "node_3348", + "improvement_over_parent": null + }, + "node_3350": { + "node_id": "node_3350", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3349", + "improvement_over_parent": null + }, + "node_3351": { + "node_id": "node_3351", + "content": "INITIAL DESIGN (Trace 485)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3352": { + "node_id": "node_3352", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n\nPerformance:\n Mass: 168.17 kg\n Factor of Safety: 1.05\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.17231815574104, + "fos_buckling": 1.051209121413762, + "fos_yielding": 3.5512795120646032, + "deflection": 0.0019613905032364277, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001980)" + }, + "parent_node_id": "node_3351", + "improvement_over_parent": null + }, + "node_3353": { + "node_id": "node_3353", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n\nPerformance:\n Mass: 171.18 kg\n Factor of Safety: 1.05\n Max Deflection: 1.90e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.18117318148555, + "fos_buckling": 1.0508741184832522, + "fos_yielding": 3.5039076266359355, + "deflection": 0.001903759066835571, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001642)" + }, + "parent_node_id": "node_3352", + "improvement_over_parent": null + }, + "node_3354": { + "node_id": "node_3354", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0038)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 181.80 kg\n Factor of Safety: 1.16\n Max Deflection: 1.82e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.80038405017126, + "fos_buckling": 1.1552523701782296, + "fos_yielding": 3.519080905559887, + "deflection": 0.0018176437639584096, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002581)" + }, + "parent_node_id": "node_3353", + "improvement_over_parent": null + }, + "node_3355": { + "node_id": "node_3355", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 214.85 kg\n Factor of Safety: 1.32\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.85496562281838, + "fos_buckling": 1.3235364042440867, + "fos_yielding": 4.154102685741906, + "deflection": 0.001540457523963053, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.199)" + }, + "parent_node_id": "node_3354", + "improvement_over_parent": null + }, + "node_3356": { + "node_id": "node_3356", + "content": "MODIFICATION: Increase 10 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M3: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0039)]\n\nPerformance:\n Mass: 217.81 kg\n Factor of Safety: 1.23\n Max Deflection: 1.54e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.8076600934666, + "fos_buckling": 1.227534122931099, + "fos_yielding": 4.15538959764121, + "deflection": 0.0015350451839522335, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.266)" + }, + "parent_node_id": "node_3355", + "improvement_over_parent": null + }, + "node_3357": { + "node_id": "node_3357", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3356", + "improvement_over_parent": null + }, + "node_3358": { + "node_id": "node_3358", + "content": "INITIAL DESIGN (Trace 486)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 125.71 kg\n Factor of Safety: 0.95\n Max Deflection: 2.52e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 125.71241118862471, + "fos_buckling": 0.9544656478459617, + "fos_yielding": 2.551991041562077, + "deflection": 0.0025208085843839755, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3359": { + "node_id": "node_3359", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0026)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0026)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0036)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0014)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0015)]\n\nPerformance:\n Mass: 130.95 kg\n Factor of Safety: 0.89\n Max Deflection: 2.45e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 130.9460486724575, + "fos_buckling": 0.8939708592489723, + "fos_yielding": 2.5179428271588495, + "deflection": 0.0024485074749748923, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001502)" + }, + "parent_node_id": "node_3358", + "improvement_over_parent": null + }, + "node_3360": { + "node_id": "node_3360", + "content": "MODIFICATION: Increase all_members thickness by 33%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 171.00 kg\n Factor of Safety: 1.11\n Max Deflection: 1.88e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 171.00061576609338, + "fos_buckling": 1.112101802522359, + "fos_yielding": 3.28504886157779, + "deflection": 0.0018805194114930738, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.328)" + }, + "parent_node_id": "node_3359", + "improvement_over_parent": null + }, + "node_3361": { + "node_id": "node_3361", + "content": "MODIFICATION: Increase 8 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0056)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n\nPerformance:\n Mass: 179.30 kg\n Factor of Safety: 1.11\n Max Deflection: 1.76e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.30130332674295, + "fos_buckling": 1.10916068625545, + "fos_yielding": 3.284933698927289, + "deflection": 0.0017610964279099633, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.269)" + }, + "parent_node_id": "node_3360", + "improvement_over_parent": null + }, + "node_3362": { + "node_id": "node_3362", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0056)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 182.59 kg\n Factor of Safety: 1.30\n Max Deflection: 1.73e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 182.5880011972757, + "fos_buckling": 1.2981351346156194, + "fos_yielding": 3.2914708554068484, + "deflection": 0.0017313813564834375, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001458)" + }, + "parent_node_id": "node_3361", + "improvement_over_parent": null + }, + "node_3363": { + "node_id": "node_3363", + "content": "MODIFICATION: Increase all_members thickness by 29%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0072)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 230.07 kg\n Factor of Safety: 1.56\n Max Deflection: 1.38e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 230.0663268109863, + "fos_buckling": 1.5598365162514922, + "fos_yielding": 4.148544250172101, + "deflection": 0.0013787335403271568, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.287)" + }, + "parent_node_id": "node_3362", + "improvement_over_parent": null + }, + "node_3364": { + "node_id": "node_3364", + "content": "MODIFICATION: Increase 3 thickness by 27%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0078)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0072)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 238.32 kg\n Factor of Safety: 1.06\n Max Deflection: 1.37e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 238.31790253524318, + "fos_buckling": 1.0603695705744995, + "fos_yielding": 4.858721986888432, + "deflection": 0.0013671588156223343, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.266)" + }, + "parent_node_id": "node_3363", + "improvement_over_parent": null + }, + "node_3365": { + "node_id": "node_3365", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3364", + "improvement_over_parent": null + }, + "node_3366": { + "node_id": "node_3366", + "content": "INITIAL DESIGN (Trace 487)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0014)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0020)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n\nPerformance:\n Mass: 97.63 kg\n Factor of Safety: 0.50\n Max Deflection: 3.38e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 97.63197049070425, + "fos_buckling": 0.5043255017130402, + "fos_yielding": 1.4365190245363553, + "deflection": 0.0033762023249024444, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3367": { + "node_id": "node_3367", + "content": "MODIFICATION: Increase 1 thickness by 51%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0020)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n\nPerformance:\n Mass: 100.52 kg\n Factor of Safety: 0.61\n Max Deflection: 3.18e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 100.51666937656152, + "fos_buckling": 0.6104354033019221, + "fos_yielding": 1.4346707421033555, + "deflection": 0.0031801137152856285, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.513)" + }, + "parent_node_id": "node_3366", + "improvement_over_parent": null + }, + "node_3368": { + "node_id": "node_3368", + "content": "MODIFICATION: Increase 4 thickness by 49%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0020)]\n\nPerformance:\n Mass: 106.09 kg\n Factor of Safety: 0.68\n Max Deflection: 3.13e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 106.08877640287407, + "fos_buckling": 0.676244631258651, + "fos_yielding": 2.07795951990776, + "deflection": 0.003129331791631411, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(4, thickness, 1.488)" + }, + "parent_node_id": "node_3367", + "improvement_over_parent": null + }, + "node_3369": { + "node_id": "node_3369", + "content": "MODIFICATION: Increase 10 thickness by 34%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0021)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0009)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0029)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0027)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0012)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0015)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0027)]\n\nPerformance:\n Mass: 111.37 kg\n Factor of Safety: 0.86\n Max Deflection: 2.89e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 111.36843433440723, + "fos_buckling": 0.8590314288246581, + "fos_yielding": 2.0747028713967133, + "deflection": 0.0028872258695492735, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.344)" + }, + "parent_node_id": "node_3368", + "improvement_over_parent": null + }, + "node_3370": { + "node_id": "node_3370", + "content": "MODIFICATION: Increase all_members thickness by 32%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 144.65 kg\n Factor of Safety: 1.09\n Max Deflection: 2.23e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 144.64723478469332, + "fos_buckling": 1.085967157470084, + "fos_yielding": 2.693061489751534, + "deflection": 0.002227654051990422, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.316)" + }, + "parent_node_id": "node_3369", + "improvement_over_parent": null + }, + "node_3371": { + "node_id": "node_3371", + "content": "MODIFICATION: Increase all_members thickness by 28%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n\nPerformance:\n Mass: 181.76 kg\n Factor of Safety: 1.32\n Max Deflection: 1.78e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 181.76324035365167, + "fos_buckling": 1.3230993190180318, + "fos_yielding": 3.3818555585846237, + "deflection": 0.0017769289581602249, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.276)" + }, + "parent_node_id": "node_3370", + "improvement_over_parent": null + }, + "node_3372": { + "node_id": "node_3372", + "content": "MODIFICATION: Increase all_members thickness by 25%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.47 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.47372796259907, + "fos_buckling": 1.5696274176039544, + "fos_yielding": 4.154828431851116, + "deflection": 0.0014490757260430841, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.252)" + }, + "parent_node_id": "node_3371", + "improvement_over_parent": null + }, + "node_3373": { + "node_id": "node_3373", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3372", + "improvement_over_parent": null + }, + "node_3374": { + "node_id": "node_3374", + "content": "INITIAL DESIGN (Trace 488)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n\nPerformance:\n Mass: 97.01 kg\n Factor of Safety: 0.05\n Max Deflection: 1.57e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 97.00699075104535, + "fos_buckling": 0.04531412075992427, + "fos_yielding": 0.8801876456421693, + "deflection": 0.015715932747001546, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3375": { + "node_id": "node_3375", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 127.20 kg\n Factor of Safety: 0.05\n Max Deflection: 8.59e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 127.20478886619102, + "fos_buckling": 0.045168636422524396, + "fos_yielding": 1.0491098927307965, + "deflection": 0.008593653629868976, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003930)" + }, + "parent_node_id": "node_3374", + "improvement_over_parent": null + }, + "node_3376": { + "node_id": "node_3376", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n\nPerformance:\n Mass: 158.08 kg\n Factor of Safety: 1.17\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.08120724396653, + "fos_buckling": 1.173389817292238, + "fos_yielding": 2.9429050643593366, + "deflection": 0.0020400797299209663, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003974)" + }, + "parent_node_id": "node_3375", + "improvement_over_parent": null + }, + "node_3377": { + "node_id": "node_3377", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n\nPerformance:\n Mass: 175.61 kg\n Factor of Safety: 1.28\n Max Deflection: 1.84e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.61146325741103, + "fos_buckling": 1.2845883412841919, + "fos_yielding": 3.2682308568936946, + "deflection": 0.0018384647392916, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.119)" + }, + "parent_node_id": "node_3376", + "improvement_over_parent": null + }, + "node_3378": { + "node_id": "node_3378", + "content": "MODIFICATION: Increase all_members thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.13 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1264769186906, + "fos_buckling": 1.567250087309112, + "fos_yielding": 4.1489878340590804, + "deflection": 0.0014513010892775297, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.297)" + }, + "parent_node_id": "node_3377", + "improvement_over_parent": null + }, + "node_3379": { + "node_id": "node_3379", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3378", + "improvement_over_parent": null + }, + "node_3380": { + "node_id": "node_3380", + "content": "INITIAL DESIGN (Trace 489)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0011)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 156.25 kg\n Factor of Safety: 1.13\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 156.25467349472763, + "fos_buckling": 1.132308277450421, + "fos_yielding": 3.0513360221347634, + "deflection": 0.002089883350945477, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3381": { + "node_id": "node_3381", + "content": "MODIFICATION: Increase 3 thickness by 53%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0031)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0043)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0040)]\n\nPerformance:\n Mass: 157.50 kg\n Factor of Safety: 1.13\n Max Deflection: 2.09e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 157.50022883506873, + "fos_buckling": 1.1331775201990535, + "fos_yielding": 3.05214914017379, + "deflection": 0.002090139969548392, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.529)" + }, + "parent_node_id": "node_3380", + "improvement_over_parent": null + }, + "node_3382": { + "node_id": "node_3382", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0049)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n\nPerformance:\n Mass: 175.95 kg\n Factor of Safety: 1.25\n Max Deflection: 1.87e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.94713850873018, + "fos_buckling": 1.2464233499874118, + "fos_yielding": 3.408305813196848, + "deflection": 0.0018726094084004568, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.126)" + }, + "parent_node_id": "node_3381", + "improvement_over_parent": null + }, + "node_3383": { + "node_id": "node_3383", + "content": "MODIFICATION: Increase all_members thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 217.29 kg\n Factor of Safety: 1.49\n Max Deflection: 1.52e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 217.28629929626624, + "fos_buckling": 1.4855139732542, + "fos_yielding": 4.205445032627118, + "deflection": 0.001519257727238505, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.258)" + }, + "parent_node_id": "node_3382", + "improvement_over_parent": null + }, + "node_3384": { + "node_id": "node_3384", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.44 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.44011403456406, + "fos_buckling": 1.5690429024059118, + "fos_yielding": 4.154792969974668, + "deflection": 0.001449264849624176, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_3383", + "improvement_over_parent": null + }, + "node_3385": { + "node_id": "node_3385", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3384", + "improvement_over_parent": null + }, + "node_3386": { + "node_id": "node_3386", + "content": "INITIAL DESIGN (Trace 490)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 169.21 kg\n Factor of Safety: 0.13\n Max Deflection: 4.85e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.206345901665, + "fos_buckling": 0.12803885383201255, + "fos_yielding": 2.1508152610162306, + "deflection": 0.004847103138867039, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3387": { + "node_id": "node_3387", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 177.82 kg\n Factor of Safety: 0.13\n Max Deflection: 4.84e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 177.81945051642566, + "fos_buckling": 0.12792201851626922, + "fos_yielding": 2.1488526444150535, + "deflection": 0.004835875555774554, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)" + }, + "parent_node_id": "node_3386", + "improvement_over_parent": null + }, + "node_3388": { + "node_id": "node_3388", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 220.47 kg\n Factor of Safety: 1.54\n Max Deflection: 1.49e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 220.47141886779906, + "fos_buckling": 1.53528549878452, + "fos_yielding": 4.153694111450912, + "deflection": 0.0014921627014751423, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3387", + "improvement_over_parent": null + }, + "node_3389": { + "node_id": "node_3389", + "content": "MODIFICATION: Increase 1 thickness by 21%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.27 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.26573555113865, + "fos_buckling": 1.5680555680486465, + "fos_yielding": 4.151336847497303, + "deflection": 0.0014503622236540846, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.208)" + }, + "parent_node_id": "node_3388", + "improvement_over_parent": null + }, + "node_3390": { + "node_id": "node_3390", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3389", + "improvement_over_parent": null + }, + "node_3391": { + "node_id": "node_3391", + "content": "INITIAL DESIGN (Trace 491)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0024)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0024)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0011)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0008)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0034)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0032)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0014)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0031)]\n\nPerformance:\n Mass: 119.15 kg\n Factor of Safety: 0.85\n Max Deflection: 2.61e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 119.15007045374934, + "fos_buckling": 0.8521259028293036, + "fos_yielding": 2.364286500752931, + "deflection": 0.0026060347088414405, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3392": { + "node_id": "node_3392", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n\nPerformance:\n Mass: 134.93 kg\n Factor of Safety: 0.95\n Max Deflection: 2.30e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 134.92685455350681, + "fos_buckling": 0.9469352039126476, + "fos_yielding": 2.6764265742847013, + "deflection": 0.002303922523970251, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.140)" + }, + "parent_node_id": "node_3391", + "improvement_over_parent": null + }, + "node_3393": { + "node_id": "node_3393", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0010)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 141.86 kg\n Factor of Safety: 1.00\n Max Deflection: 2.25e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 141.8581000002824, + "fos_buckling": 1.0042067523199816, + "fos_yielding": 2.6835557233531997, + "deflection": 0.0022452463949792145, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001640)" + }, + "parent_node_id": "node_3392", + "improvement_over_parent": null + }, + "node_3394": { + "node_id": "node_3394", + "content": "MODIFICATION: Increase 3 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0028)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0038)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0036)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0036)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0016)]\n\nPerformance:\n Mass: 143.02 kg\n Factor of Safety: 1.08\n Max Deflection: 2.24e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 143.01574445299568, + "fos_buckling": 1.0777214473166543, + "fos_yielding": 2.684369143992701, + "deflection": 0.002238822928611873, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(3, thickness, 1.560)" + }, + "parent_node_id": "node_3393", + "improvement_over_parent": null + }, + "node_3395": { + "node_id": "node_3395", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0032)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0031)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0044)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0041)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n\nPerformance:\n Mass: 162.33 kg\n Factor of Safety: 1.20\n Max Deflection: 1.98e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.32651901532319, + "fos_buckling": 1.203680943084028, + "fos_yielding": 3.045588505983683, + "deflection": 0.001975000990606734, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.144)" + }, + "parent_node_id": "node_3394", + "improvement_over_parent": null + }, + "node_3396": { + "node_id": "node_3396", + "content": "MODIFICATION: Increase all_members thickness by 17%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 187.30 kg\n Factor of Safety: 1.36\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 187.29910110109785, + "fos_buckling": 1.3597561005501584, + "fos_yielding": 3.512269359059773, + "deflection": 0.001714495857638718, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.166)" + }, + "parent_node_id": "node_3395", + "improvement_over_parent": null + }, + "node_3397": { + "node_id": "node_3397", + "content": "MODIFICATION: Increase 9 thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0037)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0051)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0048)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0048)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0056)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0022)]\n\nPerformance:\n Mass: 193.16 kg\n Factor of Safety: 1.37\n Max Deflection: 1.65e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.15514117261657, + "fos_buckling": 1.3716609569888538, + "fos_yielding": 3.5098977111961274, + "deflection": 0.001650044382682609, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.178)" + }, + "parent_node_id": "node_3396", + "improvement_over_parent": null + }, + "node_3398": { + "node_id": "node_3398", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0067)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n\nPerformance:\n Mass: 228.55 kg\n Factor of Safety: 1.58\n Max Deflection: 1.40e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 228.55323445877303, + "fos_buckling": 1.578625115766309, + "fos_yielding": 4.1527952994040955, + "deflection": 0.0013979229535571673, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_3397", + "improvement_over_parent": null + }, + "node_3399": { + "node_id": "node_3399", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3398", + "improvement_over_parent": null + }, + "node_3400": { + "node_id": "node_3400", + "content": "INITIAL DESIGN (Trace 492)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0035)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0046)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 112.91 kg\n Factor of Safety: 0.05\n Max Deflection: 1.35e-02 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 112.91300873972472, + "fos_buckling": 0.051645440070653095, + "fos_yielding": 1.024320356325785, + "deflection": 0.013511121536831292, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3401": { + "node_id": "node_3401", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 137.07 kg\n Factor of Safety: 0.06\n Max Deflection: 1.11e-02 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 137.07482295366916, + "fos_buckling": 0.06067557934539519, + "fos_yielding": 1.24316105495409, + "deflection": 0.01114092249268219, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.235)" + }, + "parent_node_id": "node_3400", + "improvement_over_parent": null + }, + "node_3402": { + "node_id": "node_3402", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 179.73 kg\n Factor of Safety: 0.06\n Max Deflection: 6.10e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 179.72679130504255, + "fos_buckling": 0.06040146018741491, + "fos_yielding": 1.4769119926906376, + "deflection": 0.006099924052490549, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3401", + "improvement_over_parent": null + }, + "node_3403": { + "node_id": "node_3403", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.34 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.33784554780325, + "fos_buckling": 1.5681625165671922, + "fos_yielding": 4.153561673469322, + "deflection": 0.0014500470921921702, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_3402", + "improvement_over_parent": null + }, + "node_3404": { + "node_id": "node_3404", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3403", + "improvement_over_parent": null + }, + "node_3405": { + "node_id": "node_3405", + "content": "INITIAL DESIGN (Trace 493)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (6 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3406": { + "node_id": "node_3406", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0011)]\n\nPerformance:\n Mass: 145.75 kg\n Factor of Safety: 1.59\n Max Deflection: 9.07e+12 m\n Status: FEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 145.75006986379924, + "fos_buckling": 1.592344782518598, + "fos_yielding": 4.187981125184374, + "deflection": 9068478758309.588, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001107)" + }, + "parent_node_id": "node_3405", + "improvement_over_parent": null + }, + "node_3407": { + "node_id": "node_3407", + "content": "MODIFICATION: Increase 6 thickness by 64%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 148.09 kg\n Factor of Safety: 1.59\n Max Deflection: 9.07e+12 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 148.08822634587264, + "fos_buckling": 1.5918727710083311, + "fos_yielding": 4.186739701016964, + "deflection": 9068478758309.588, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.637)" + }, + "parent_node_id": "node_3406", + "improvement_over_parent": null + }, + "node_3408": { + "node_id": "node_3408", + "content": "MODIFICATION: Increase 1 thickness by 38%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (7 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n\nPerformance:\n Mass: 152.57 kg\n Factor of Safety: 1.59\n Max Deflection: 9.07e+12 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 152.56536673561448, + "fos_buckling": 1.591421125450702, + "fos_yielding": 4.185551840767482, + "deflection": 9068478758309.588, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.376)" + }, + "parent_node_id": "node_3407", + "improvement_over_parent": null + }, + "node_3409": { + "node_id": "node_3409", + "content": "MODIFICATION: Add member connecting joints 1 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 158.72 kg\n Factor of Safety: 0.12\n Max Deflection: 5.81e+12 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 158.7191814739123, + "fos_buckling": 0.11978538857001218, + "fos_yielding": 3.355220812058797, + "deflection": 5806307389297.174, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)" + }, + "parent_node_id": "node_3408", + "improvement_over_parent": null + }, + "node_3410": { + "node_id": "node_3410", + "content": "MODIFICATION: Increase 0 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 162.13 kg\n Factor of Safety: 0.15\n Max Deflection: 1.05e+13 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.13093012824373, + "fos_buckling": 0.14724553641124985, + "fos_yielding": 1.2582078045220488, + "deflection": 10535683435541.06, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(0, thickness, 1.258)" + }, + "parent_node_id": "node_3409", + "improvement_over_parent": null + }, + "node_3411": { + "node_id": "node_3411", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 174.68 kg\n Factor of Safety: 0.13\n Max Deflection: 4.85e-03 m\n Status: INFEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.67928774834, + "fos_buckling": 0.12796457990345875, + "fos_yielding": 2.1495675967780086, + "deflection": 0.004848054355739207, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)" + }, + "parent_node_id": "node_3410", + "improvement_over_parent": null + }, + "node_3412": { + "node_id": "node_3412", + "content": "MODIFICATION: Increase 7 thickness by 42%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 176.91 kg\n Factor of Safety: 0.13\n Max Deflection: 4.62e-03 m\n Status: INFEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.90971119184283, + "fos_buckling": 0.12790411283208314, + "fos_yielding": 2.148551862131756, + "deflection": 0.0046197281024921814, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.416)" + }, + "parent_node_id": "node_3411", + "improvement_over_parent": null + }, + "node_3413": { + "node_id": "node_3413", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 180.46 kg\n Factor of Safety: 0.13\n Max Deflection: 4.63e-03 m\n Status: INFEASIBLE", + "depth": 8, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 180.46411852754085, + "fos_buckling": 0.1278559734997581, + "fos_yielding": 2.1477432106363623, + "deflection": 0.004628266506585472, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_3412", + "improvement_over_parent": null + }, + "node_3414": { + "node_id": "node_3414", + "content": "MODIFICATION: Add member connecting joints 2 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M5: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M7: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.12 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 9, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.11608687891425, + "fos_buckling": 1.5721426753038865, + "fos_yielding": 4.15449170414218, + "deflection": 0.0014482047509986906, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)" + }, + "parent_node_id": "node_3413", + "improvement_over_parent": null + }, + "node_3415": { + "node_id": "node_3415", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 10, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3414", + "improvement_over_parent": null + }, + "node_3416": { + "node_id": "node_3416", + "content": "INITIAL DESIGN (Trace 494)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 165.85 kg\n Factor of Safety: 0.24\n Max Deflection: 7.76e+12 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.84738832622753, + "fos_buckling": 0.23599760806095232, + "fos_yielding": 3.4525807656405116, + "deflection": 7758110607268.246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3417": { + "node_id": "node_3417", + "content": "MODIFICATION: Increase 5 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 176.12 kg\n Factor of Safety: 0.24\n Max Deflection: 7.76e+12 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 176.11936903132573, + "fos_buckling": 0.23599760806095232, + "fos_yielding": 4.29475573275585, + "deflection": 7758110607268.246, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(5, thickness, 1.558)" + }, + "parent_node_id": "node_3416", + "improvement_over_parent": null + }, + "node_3418": { + "node_id": "node_3418", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 219.73 kg\n Factor of Safety: 1.52\n Max Deflection: 1.47e-03 m\n Status: FEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 219.73042327408643, + "fos_buckling": 1.5224580307827775, + "fos_yielding": 4.195107600608034, + "deflection": 0.0014705362014732128, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)" + }, + "parent_node_id": "node_3417", + "improvement_over_parent": null + }, + "node_3419": { + "node_id": "node_3419", + "content": "MODIFICATION: Add member connecting joints 3 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M7: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M10: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n\nPerformance:\n Mass: 223.28 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.28483060978445, + "fos_buckling": 1.568150462473119, + "fos_yielding": 4.151366262864446, + "deflection": 0.0014503630325070304, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)" + }, + "parent_node_id": "node_3418", + "improvement_over_parent": null + }, + "node_3420": { + "node_id": "node_3420", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3419", + "improvement_over_parent": null + }, + "node_3421": { + "node_id": "node_3421", + "content": "INITIAL DESIGN (Trace 495)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0033)]\n\nPerformance:\n Mass: 178.00 kg\n Factor of Safety: 1.05\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.00004720389134, + "fos_buckling": 1.0527713035699109, + "fos_yielding": 3.711498872286837, + "deflection": 0.0019104428442925205, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3422": { + "node_id": "node_3422", + "content": "MODIFICATION: Increase 10 thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0041)]\n\nPerformance:\n Mass: 183.71 kg\n Factor of Safety: 1.23\n Max Deflection: 1.80e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 183.71269224967642, + "fos_buckling": 1.229490382726446, + "fos_yielding": 3.70821039849863, + "deflection": 0.0017982011807108622, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.235)" + }, + "parent_node_id": "node_3421", + "improvement_over_parent": null + }, + "node_3423": { + "node_id": "node_3423", + "content": "MODIFICATION: Increase 10 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 190.13 kg\n Factor of Safety: 1.42\n Max Deflection: 1.71e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 190.13384065537593, + "fos_buckling": 1.4168148799506595, + "fos_yielding": 3.705574662981521, + "deflection": 0.0017092799792684272, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(10, thickness, 1.220)" + }, + "parent_node_id": "node_3422", + "improvement_over_parent": null + }, + "node_3424": { + "node_id": "node_3424", + "content": "MODIFICATION: Increase 1 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0013)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 193.48 kg\n Factor of Safety: 1.40\n Max Deflection: 1.64e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 193.48191060501873, + "fos_buckling": 1.3986894340120737, + "fos_yielding": 3.703365989989267, + "deflection": 0.0016369855405231701, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.295)" + }, + "parent_node_id": "node_3423", + "improvement_over_parent": null + }, + "node_3425": { + "node_id": "node_3425", + "content": "MODIFICATION: Increase 9 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0039)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0017)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n\nPerformance:\n Mass: 195.28 kg\n Factor of Safety: 1.41\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 195.28132517881284, + "fos_buckling": 1.410759566243264, + "fos_yielding": 3.7047058632694436, + "deflection": 0.001631146042503857, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.350)" + }, + "parent_node_id": "node_3424", + "improvement_over_parent": null + }, + "node_3426": { + "node_id": "node_3426", + "content": "MODIFICATION: Increase all_members thickness by 13%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0019)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 218.95 kg\n Factor of Safety: 1.55\n Max Deflection: 1.46e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 218.94970207372606, + "fos_buckling": 1.5490884923019554, + "fos_yielding": 4.151326596761803, + "deflection": 0.0014571771873583947, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.133)" + }, + "parent_node_id": "node_3425", + "improvement_over_parent": null + }, + "node_3427": { + "node_id": "node_3427", + "content": "MODIFICATION: Increase 9 thickness by 60%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.41 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.4055094179129, + "fos_buckling": 1.5693990759263152, + "fos_yielding": 4.153515772285263, + "deflection": 0.001449453531273561, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(9, thickness, 1.603)" + }, + "parent_node_id": "node_3426", + "improvement_over_parent": null + }, + "node_3428": { + "node_id": "node_3428", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3427", + "improvement_over_parent": null + }, + "node_3429": { + "node_id": "node_3429", + "content": "INITIAL DESIGN (Trace 496)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 168.00 kg\n Factor of Safety: 1.01\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.00316446829754, + "fos_buckling": 1.0128984975475877, + "fos_yielding": 3.2544600645329878, + "deflection": 0.001998855018803471, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3430": { + "node_id": "node_3430", + "content": "MODIFICATION: Increase 8 thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0034)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0021)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0018)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0047)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0044)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0044)]\n\nPerformance:\n Mass: 169.06 kg\n Factor of Safety: 1.02\n Max Deflection: 2.00e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 169.0558753513822, + "fos_buckling": 1.0159048863973377, + "fos_yielding": 3.252375303879859, + "deflection": 0.001997588879271742, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(8, thickness, 1.199)" + }, + "parent_node_id": "node_3429", + "improvement_over_parent": null + }, + "node_3431": { + "node_id": "node_3431", + "content": "MODIFICATION: Increase all_members thickness by 31%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 216.45 kg\n Factor of Safety: 1.25\n Max Deflection: 1.56e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 216.44545299270777, + "fos_buckling": 1.246821129884056, + "fos_yielding": 4.158391453877632, + "deflection": 0.0015631078749353585, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.307)" + }, + "parent_node_id": "node_3430", + "improvement_over_parent": null + }, + "node_3432": { + "node_id": "node_3432", + "content": "MODIFICATION: Increase 1 thickness by 56%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 222.39 kg\n Factor of Safety: 1.53\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 222.3873502767953, + "fos_buckling": 1.530655893644701, + "fos_yielding": 4.152617983518832, + "deflection": 0.0014523623757373828, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.562)" + }, + "parent_node_id": "node_3431", + "improvement_over_parent": null + }, + "node_3433": { + "node_id": "node_3433", + "content": "MODIFICATION: Increase 2 thickness by 30%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.16 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.1584496155408, + "fos_buckling": 1.5674875123653806, + "fos_yielding": 4.14957975516408, + "deflection": 0.0014510896088837444, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(2, thickness, 1.304)" + }, + "parent_node_id": "node_3432", + "improvement_over_parent": null + }, + "node_3434": { + "node_id": "node_3434", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3433", + "improvement_over_parent": null + }, + "node_3435": { + "node_id": "node_3435", + "content": "INITIAL DESIGN (Trace 497)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (8 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3436": { + "node_id": "node_3436", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0027)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0027)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0012)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0037)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0016)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0035)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0035)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0015)]\n\nPerformance:\n Mass: 128.12 kg\n Factor of Safety: 0.99\n Max Deflection: 2.41e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 128.12491283414315, + "fos_buckling": 0.9914671371930212, + "fos_yielding": 2.6628422760207746, + "deflection": 0.0024130163845669044, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001455)" + }, + "parent_node_id": "node_3435", + "improvement_over_parent": null + }, + "node_3437": { + "node_id": "node_3437", + "content": "MODIFICATION: Increase all_members thickness by 20%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n\nPerformance:\n Mass: 152.33 kg\n Factor of Safety: 1.15\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 152.33316536760194, + "fos_buckling": 1.1528163777083742, + "fos_yielding": 3.165036163918331, + "deflection": 0.002035669771856737, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.202)" + }, + "parent_node_id": "node_3436", + "improvement_over_parent": null + }, + "node_3438": { + "node_id": "node_3438", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n\nPerformance:\n Mass: 161.79 kg\n Factor of Safety: 1.20\n Max Deflection: 1.94e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 161.7878659764192, + "fos_buckling": 1.2040006186003236, + "fos_yielding": 3.165036163918331, + "deflection": 0.0019434319596052332, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002278)" + }, + "parent_node_id": "node_3437", + "improvement_over_parent": null + }, + "node_3439": { + "node_id": "node_3439", + "content": "MODIFICATION: Add member connecting joints 1 and 3\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0033)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0032)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0045)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0042)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0017)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0023)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0019)]\n\nPerformance:\n Mass: 168.28 kg\n Factor of Safety: 1.24\n Max Deflection: 1.92e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 168.27976706568134, + "fos_buckling": 1.238559920695924, + "fos_yielding": 3.1321931254548048, + "deflection": 0.001917621365627683, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001888)" + }, + "parent_node_id": "node_3438", + "improvement_over_parent": null + }, + "node_3440": { + "node_id": "node_3440", + "content": "MODIFICATION: Increase all_members thickness by 16%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0038)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0037)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0052)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0049)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0049)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0020)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0026)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0022)]\n\nPerformance:\n Mass: 192.55 kg\n Factor of Safety: 1.39\n Max Deflection: 1.68e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 192.54827870131635, + "fos_buckling": 1.3884997229397766, + "fos_yielding": 3.582348528553695, + "deflection": 0.0016784959481282412, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.156)" + }, + "parent_node_id": "node_3439", + "improvement_over_parent": null + }, + "node_3441": { + "node_id": "node_3441", + "content": "MODIFICATION: Increase all_members thickness by 18%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M7: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M8: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n\nPerformance:\n Mass: 223.22 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.22246182945995, + "fos_buckling": 1.5678146371145487, + "fos_yielding": 4.150763863579452, + "deflection": 0.001450645663684718, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.175)" + }, + "parent_node_id": "node_3440", + "improvement_over_parent": null + }, + "node_3442": { + "node_id": "node_3442", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3441", + "improvement_over_parent": null + }, + "node_3443": { + "node_id": "node_3443", + "content": "INITIAL DESIGN (Trace 498)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (9 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n\nPerformance:\n Mass: 0.00 kg\n Factor of Safety: 0.00\n Max Deflection: inf m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 0, + "fos_buckling": 0, + "fos_yielding": 0, + "deflection": Infinity, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3444": { + "node_id": "node_3444", + "content": "MODIFICATION: Add member connecting joints 4 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0028)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 162.56 kg\n Factor of Safety: 0.71\n Max Deflection: 2.04e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 162.5624690399492, + "fos_buckling": 0.7136419538298161, + "fos_yielding": 3.4091007864891703, + "deflection": 0.002041515924798574, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001940)" + }, + "parent_node_id": "node_3443", + "improvement_over_parent": null + }, + "node_3445": { + "node_id": "node_3445", + "content": "MODIFICATION: Increase 1 thickness by 26%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n\nPerformance:\n Mass: 165.38 kg\n Factor of Safety: 0.71\n Max Deflection: 1.96e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 165.37752268489382, + "fos_buckling": 0.7122798630474652, + "fos_yielding": 3.408962295936377, + "deflection": 0.001960078620506207, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(1, thickness, 1.258)" + }, + "parent_node_id": "node_3444", + "improvement_over_parent": null + }, + "node_3446": { + "node_id": "node_3446", + "content": "MODIFICATION: Add member connecting joints 1 and 5\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0036)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0036)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0016)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0050)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0034)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0021)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0047)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0025)]\n\nPerformance:\n Mass: 175.79 kg\n Factor of Safety: 0.82\n Max Deflection: 1.91e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 175.79461725441536, + "fos_buckling": 0.8183068534466671, + "fos_yielding": 3.418389358752506, + "deflection": 0.0019122563454267152, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002528)" + }, + "parent_node_id": "node_3445", + "improvement_over_parent": null + }, + "node_3447": { + "node_id": "node_3447", + "content": "MODIFICATION: Increase all_members thickness by 23%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 211.97 kg\n Factor of Safety: 0.96\n Max Deflection: 1.59e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 211.96781883701672, + "fos_buckling": 0.9550745871264293, + "fos_yielding": 4.116561124655614, + "deflection": 0.001588089834748363, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.225)" + }, + "parent_node_id": "node_3446", + "improvement_over_parent": null + }, + "node_3448": { + "node_id": "node_3448", + "content": "MODIFICATION: Increase 7 thickness by 39%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M4: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M5: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M6: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0042)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0036)]\n M8: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M9: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M10: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n\nPerformance:\n Mass: 214.87 kg\n Factor of Safety: 0.85\n Max Deflection: 1.58e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 214.86641720514757, + "fos_buckling": 0.8500543382498735, + "fos_yielding": 4.106384210242763, + "deflection": 0.0015824704974677394, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.385)" + }, + "parent_node_id": "node_3447", + "improvement_over_parent": null + }, + "node_3449": { + "node_id": "node_3449", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3448", + "improvement_over_parent": null + }, + "node_3450": { + "node_id": "node_3450", + "content": "INITIAL DESIGN (Trace 499)\n\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0013)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 122.02 kg\n Factor of Safety: 0.05\n Max Deflection: 9.70e-03 m\n Status: INFEASIBLE", + "depth": 0, + "node_type": "state", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 122.01748349204829, + "fos_buckling": 0.04519825075693109, + "fos_yielding": 0.9382210086715185, + "deflection": 0.009699746363707181, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": null, + "parent_node_id": null, + "improvement_over_parent": null + }, + "node_3451": { + "node_id": "node_3451", + "content": "MODIFICATION: Increase 7 thickness by 35%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (10 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n\nPerformance:\n Mass: 123.53 kg\n Factor of Safety: 0.05\n Max Deflection: 8.59e-03 m\n Status: INFEASIBLE", + "depth": 1, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 123.52801168979352, + "fos_buckling": 0.045190992112013724, + "fos_yielding": 1.049701637112081, + "deflection": 0.00858600686387709, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(7, thickness, 1.350)" + }, + "parent_node_id": "node_3450", + "improvement_over_parent": null + }, + "node_3452": { + "node_id": "node_3452", + "content": "MODIFICATION: Add member connecting joints 0 and 4\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0030)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0030)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0014)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0016)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0042)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0032)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0018)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0021)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0039)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0040)]\n\nPerformance:\n Mass: 154.43 kg\n Factor of Safety: 1.01\n Max Deflection: 2.06e-03 m\n Status: INFEASIBLE", + "depth": 2, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 154.42631895146772, + "fos_buckling": 1.0069336150767796, + "fos_yielding": 2.836612371292141, + "deflection": 0.0020588119612569306, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003977)" + }, + "parent_node_id": "node_3451", + "improvement_over_parent": null + }, + "node_3453": { + "node_id": "node_3453", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0037)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 174.29 kg\n Factor of Safety: 1.12\n Max Deflection: 1.83e-03 m\n Status: INFEASIBLE", + "depth": 3, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 174.2925667051224, + "fos_buckling": 1.1229040682190414, + "fos_yielding": 3.204298247947393, + "deflection": 0.0018266473078442638, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.138)" + }, + "parent_node_id": "node_3452", + "improvement_over_parent": null + }, + "node_3454": { + "node_id": "node_3454", + "content": "MODIFICATION: Increase 6 thickness by 22%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0035)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0034)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0015)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0019)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0048)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0020)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0024)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0045)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0045)]\n\nPerformance:\n Mass: 178.49 kg\n Factor of Safety: 1.30\n Max Deflection: 1.81e-03 m\n Status: INFEASIBLE", + "depth": 4, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 178.49097324835498, + "fos_buckling": 1.3024972732817988, + "fos_yielding": 3.32156299606675, + "deflection": 0.001809091905589258, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(6, thickness, 1.224)" + }, + "parent_node_id": "node_3453", + "improvement_over_parent": null + }, + "node_3455": { + "node_id": "node_3455", + "content": "MODIFICATION: Increase all_members thickness by 12%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0039)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0038)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0017)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0021)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0054)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0023)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0027)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0050)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0051)]\n\nPerformance:\n Mass: 198.56 kg\n Factor of Safety: 1.42\n Max Deflection: 1.63e-03 m\n Status: INFEASIBLE", + "depth": 5, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": false, + "mass": 198.5588139536048, + "fos_buckling": 1.4245081722757753, + "fos_yielding": 3.6936840349012674, + "deflection": 0.0016283113958681262, + "is_feasible": false, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.122)" + }, + "parent_node_id": "node_3454", + "improvement_over_parent": null + }, + "node_3456": { + "node_id": "node_3456", + "content": "MODIFICATION: Increase all_members thickness by 14%\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M8: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M9: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M10: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n\nPerformance:\n Mass: 223.14 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 6, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.13590702949216, + "fos_buckling": 1.567300201815224, + "fos_yielding": 4.149057663939631, + "deflection": 0.0014512074472856796, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "SCALE_PARAM(all_members, thickness, 1.136)" + }, + "parent_node_id": "node_3455", + "improvement_over_parent": null + }, + "node_3457": { + "node_id": "node_3457", + "content": "MODIFICATION: Optimal solution\n\nResulting Structure:\nJoints (6 total):\n J0: pos=(0.00, 0.00) [pinned]\n J1: pos=(3.38, 0.00) [free]\n J2: pos=(6.76, 0.00) [roller]\n J3: pos=(0.00, 3.45) [free]\n J4: pos=(3.38, 3.45) [free]\n J5: pos=(6.76, 3.45) [free]\n\nMembers (11 total):\n M0: J0-J1 [A36_Steel, Pipe(r=0.0265, t=0.0044)]\n M1: J1-J2 [A36_Steel, Pipe(r=0.0262, t=0.0044)]\n M2: J3-J4 [A36_Steel, Pipe(r=0.0118, t=0.0020)]\n M3: J4-J5 [A36_Steel, Pipe(r=0.0143, t=0.0024)]\n M4: J0-J3 [A36_Steel, Pipe(r=0.0367, t=0.0061)]\n M5: J1-J4 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M6: J2-J5 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n M7: J0-J4 [A36_Steel, Pipe(r=0.0346, t=0.0058)]\n M8: J1-J3 [A36_Steel, Pipe(r=0.0154, t=0.0026)]\n M9: J1-J5 [A36_Steel, Pipe(r=0.0186, t=0.0031)]\n M10: J2-J4 [A36_Steel, Pipe(r=0.0342, t=0.0057)]\n\nPerformance:\n Mass: 223.26 kg\n Factor of Safety: 1.57\n Max Deflection: 1.45e-03 m\n Status: FEASIBLE", + "depth": 7, + "node_type": "modification_result", + "metadata": null, + "correctness_score": 1.0, + "is_on_solution_path": true, + "mass": 223.25868550404536, + "fos_buckling": 1.5680094747486508, + "fos_yielding": 4.151342388757294, + "deflection": 0.0014504394000829865, + "is_feasible": true, + "joint_positions": null, + "member_dimensions": null, + "modification_action": { + "raw": "OPTIMAL_STATE" + }, + "parent_node_id": "node_3456", + "improvement_over_parent": null + } + }, + "edges": [ + { + "from_node": "node_0", + "to_node": "node_1", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002412)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1", + "to_node": "node_2", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.357)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2", + "to_node": "node_3", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3", + "to_node": "node_4", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_4", + "to_node": "node_5", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.429)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_5", + "to_node": "node_6", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_7", + "to_node": "node_8", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.429)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_8", + "to_node": "node_9", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.582)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_9", + "to_node": "node_10", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002609)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_10", + "to_node": "node_11", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.186)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_11", + "to_node": "node_12", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_12", + "to_node": "node_13", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_14", + "to_node": "node_15", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_15", + "to_node": "node_16", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_16", + "to_node": "node_17", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.479)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_17", + "to_node": "node_18", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_19", + "to_node": "node_20", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.164)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_20", + "to_node": "node_21", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.125)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_21", + "to_node": "node_22", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.621)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_22", + "to_node": "node_23", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_23", + "to_node": "node_24", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.203)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_24", + "to_node": "node_25", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.397)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_25", + "to_node": "node_26", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_26", + "to_node": "node_27", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_28", + "to_node": "node_29", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_29", + "to_node": "node_30", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_30", + "to_node": "node_31", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.595)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_31", + "to_node": "node_32", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_32", + "to_node": "node_33", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_34", + "to_node": "node_35", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_35", + "to_node": "node_36", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001283)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_36", + "to_node": "node_37", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003760)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_37", + "to_node": "node_38", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.355)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_38", + "to_node": "node_39", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001548)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_39", + "to_node": "node_40", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_40", + "to_node": "node_41", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.269)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_41", + "to_node": "node_42", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_43", + "to_node": "node_44", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.337)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_44", + "to_node": "node_45", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_45", + "to_node": "node_46", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002525)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_46", + "to_node": "node_47", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.272)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_47", + "to_node": "node_48", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004655)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_48", + "to_node": "node_49", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_49", + "to_node": "node_50", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_51", + "to_node": "node_52", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.582)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_52", + "to_node": "node_53", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_53", + "to_node": "node_54", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_54", + "to_node": "node_55", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001996)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_55", + "to_node": "node_56", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_56", + "to_node": "node_57", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.250)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_57", + "to_node": "node_58", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.490)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_58", + "to_node": "node_59", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_60", + "to_node": "node_61", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.374)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_61", + "to_node": "node_62", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.623)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_62", + "to_node": "node_63", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.562)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_63", + "to_node": "node_64", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.342)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_64", + "to_node": "node_65", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.160)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_65", + "to_node": "node_66", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_66", + "to_node": "node_67", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_68", + "to_node": "node_69", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001976)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_69", + "to_node": "node_70", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_70", + "to_node": "node_71", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_71", + "to_node": "node_72", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.645)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_72", + "to_node": "node_73", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_74", + "to_node": "node_75", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.418)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_75", + "to_node": "node_76", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.362)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_76", + "to_node": "node_77", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001858)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_77", + "to_node": "node_78", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_78", + "to_node": "node_79", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_79", + "to_node": "node_80", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_81", + "to_node": "node_82", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_82", + "to_node": "node_83", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_83", + "to_node": "node_84", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.247)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_84", + "to_node": "node_85", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_86", + "to_node": "node_87", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_87", + "to_node": "node_88", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_88", + "to_node": "node_89", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_89", + "to_node": "node_90", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_90", + "to_node": "node_91", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_91", + "to_node": "node_92", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_92", + "to_node": "node_93", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_94", + "to_node": "node_95", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_95", + "to_node": "node_96", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.353)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_96", + "to_node": "node_97", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.623)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_97", + "to_node": "node_98", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.138)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_98", + "to_node": "node_99", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_100", + "to_node": "node_101", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.555)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_101", + "to_node": "node_102", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001546)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_102", + "to_node": "node_103", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.267)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_103", + "to_node": "node_104", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_104", + "to_node": "node_105", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_105", + "to_node": "node_106", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_107", + "to_node": "node_108", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003012)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_108", + "to_node": "node_109", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_109", + "to_node": "node_110", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_110", + "to_node": "node_111", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004317)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_111", + "to_node": "node_112", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.339)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_112", + "to_node": "node_113", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.323)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_113", + "to_node": "node_114", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_115", + "to_node": "node_116", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_116", + "to_node": "node_117", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_117", + "to_node": "node_118", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_118", + "to_node": "node_119", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_120", + "to_node": "node_121", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_121", + "to_node": "node_122", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_122", + "to_node": "node_123", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001959)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_123", + "to_node": "node_124", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_124", + "to_node": "node_125", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_125", + "to_node": "node_126", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_126", + "to_node": "node_127", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.466)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_127", + "to_node": "node_128", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_129", + "to_node": "node_130", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.172)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_130", + "to_node": "node_131", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_131", + "to_node": "node_132", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003921)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_132", + "to_node": "node_133", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.139)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_133", + "to_node": "node_134", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_134", + "to_node": "node_135", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_136", + "to_node": "node_137", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_137", + "to_node": "node_138", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_138", + "to_node": "node_139", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_139", + "to_node": "node_140", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_140", + "to_node": "node_141", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.517)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_141", + "to_node": "node_142", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_143", + "to_node": "node_144", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001629)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_144", + "to_node": "node_145", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003625)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_145", + "to_node": "node_146", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 66%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.656)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_146", + "to_node": "node_147", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_147", + "to_node": "node_148", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_148", + "to_node": "node_149", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_149", + "to_node": "node_150", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.182)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_150", + "to_node": "node_151", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_152", + "to_node": "node_153", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_153", + "to_node": "node_154", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.205)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_154", + "to_node": "node_155", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_155", + "to_node": "node_156", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_157", + "to_node": "node_158", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_158", + "to_node": "node_159", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004286)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_159", + "to_node": "node_160", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004333)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_160", + "to_node": "node_161", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.339)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_161", + "to_node": "node_162", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_162", + "to_node": "node_163", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_164", + "to_node": "node_165", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.473)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_165", + "to_node": "node_166", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_166", + "to_node": "node_167", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001605)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_167", + "to_node": "node_168", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.597)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_168", + "to_node": "node_169", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_169", + "to_node": "node_170", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_171", + "to_node": "node_172", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.172)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_172", + "to_node": "node_173", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002366)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_173", + "to_node": "node_174", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.133)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_174", + "to_node": "node_175", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_175", + "to_node": "node_176", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_176", + "to_node": "node_177", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_178", + "to_node": "node_179", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_179", + "to_node": "node_180", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_180", + "to_node": "node_181", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.389)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_181", + "to_node": "node_182", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_183", + "to_node": "node_184", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_184", + "to_node": "node_185", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.595)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_185", + "to_node": "node_186", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_186", + "to_node": "node_187", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.383)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_187", + "to_node": "node_188", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_188", + "to_node": "node_189", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.560)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_189", + "to_node": "node_190", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_191", + "to_node": "node_192", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_192", + "to_node": "node_193", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001765)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_193", + "to_node": "node_194", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_194", + "to_node": "node_195", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_195", + "to_node": "node_196", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_197", + "to_node": "node_198", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.515)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_198", + "to_node": "node_199", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.196)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_199", + "to_node": "node_200", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003725)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_200", + "to_node": "node_201", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_201", + "to_node": "node_202", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_202", + "to_node": "node_203", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_203", + "to_node": "node_204", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_205", + "to_node": "node_206", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004370)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_206", + "to_node": "node_207", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.577)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_207", + "to_node": "node_208", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_208", + "to_node": "node_209", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.321)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_209", + "to_node": "node_210", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_210", + "to_node": "node_211", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.355)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_211", + "to_node": "node_212", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_213", + "to_node": "node_214", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_214", + "to_node": "node_215", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_215", + "to_node": "node_216", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_216", + "to_node": "node_217", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_218", + "to_node": "node_219", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_219", + "to_node": "node_220", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_220", + "to_node": "node_221", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_221", + "to_node": "node_222", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_222", + "to_node": "node_223", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_224", + "to_node": "node_225", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_225", + "to_node": "node_226", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_226", + "to_node": "node_227", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.555)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_227", + "to_node": "node_228", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_229", + "to_node": "node_230", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001521)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_230", + "to_node": "node_231", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_231", + "to_node": "node_232", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_232", + "to_node": "node_233", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_233", + "to_node": "node_234", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_234", + "to_node": "node_235", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_236", + "to_node": "node_237", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_237", + "to_node": "node_238", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.414)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_238", + "to_node": "node_239", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.229)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_239", + "to_node": "node_240", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_240", + "to_node": "node_241", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_241", + "to_node": "node_242", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_242", + "to_node": "node_243", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_244", + "to_node": "node_245", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003461)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_245", + "to_node": "node_246", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_246", + "to_node": "node_247", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.439)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_247", + "to_node": "node_248", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_248", + "to_node": "node_249", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.497)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_249", + "to_node": "node_250", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_251", + "to_node": "node_252", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001975)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_252", + "to_node": "node_253", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004443)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_253", + "to_node": "node_254", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001974)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_254", + "to_node": "node_255", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_255", + "to_node": "node_256", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_257", + "to_node": "node_258", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004592)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_258", + "to_node": "node_259", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002064)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_259", + "to_node": "node_260", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_260", + "to_node": "node_261", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_262", + "to_node": "node_263", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001674)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_263", + "to_node": "node_264", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_264", + "to_node": "node_265", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_265", + "to_node": "node_266", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_266", + "to_node": "node_267", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.439)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_267", + "to_node": "node_268", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_269", + "to_node": "node_270", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.335)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_270", + "to_node": "node_271", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_271", + "to_node": "node_272", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002153)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_272", + "to_node": "node_273", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_273", + "to_node": "node_274", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_274", + "to_node": "node_275", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_276", + "to_node": "node_277", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_277", + "to_node": "node_278", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.567)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_278", + "to_node": "node_279", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_279", + "to_node": "node_280", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_281", + "to_node": "node_282", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.534)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_282", + "to_node": "node_283", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.385)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_283", + "to_node": "node_284", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_284", + "to_node": "node_285", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.479)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_285", + "to_node": "node_286", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_286", + "to_node": "node_287", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_288", + "to_node": "node_289", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_289", + "to_node": "node_290", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_290", + "to_node": "node_291", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_291", + "to_node": "node_292", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.403)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_292", + "to_node": "node_293", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_294", + "to_node": "node_295", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.335)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_295", + "to_node": "node_296", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_296", + "to_node": "node_297", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_297", + "to_node": "node_298", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_298", + "to_node": "node_299", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_299", + "to_node": "node_300", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_301", + "to_node": "node_302", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_302", + "to_node": "node_303", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_303", + "to_node": "node_304", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.435)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_304", + "to_node": "node_305", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_305", + "to_node": "node_306", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.585)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_306", + "to_node": "node_307", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_307", + "to_node": "node_308", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_308", + "to_node": "node_309", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_310", + "to_node": "node_311", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001201)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_311", + "to_node": "node_312", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_312", + "to_node": "node_313", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_313", + "to_node": "node_314", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004719)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_314", + "to_node": "node_315", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.642)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_315", + "to_node": "node_316", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_316", + "to_node": "node_317", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.610)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_317", + "to_node": "node_318", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_319", + "to_node": "node_320", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001963)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_320", + "to_node": "node_321", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.527)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_321", + "to_node": "node_322", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.211)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_322", + "to_node": "node_323", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_323", + "to_node": "node_324", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_324", + "to_node": "node_325", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_326", + "to_node": "node_327", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.269)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_327", + "to_node": "node_328", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_328", + "to_node": "node_329", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.414)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_329", + "to_node": "node_330", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_330", + "to_node": "node_331", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.387)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_331", + "to_node": "node_332", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_333", + "to_node": "node_334", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_334", + "to_node": "node_335", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_335", + "to_node": "node_336", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.449)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_336", + "to_node": "node_337", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_338", + "to_node": "node_339", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_339", + "to_node": "node_340", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_340", + "to_node": "node_341", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_341", + "to_node": "node_342", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.391)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_342", + "to_node": "node_343", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_343", + "to_node": "node_344", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_344", + "to_node": "node_345", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_345", + "to_node": "node_346", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_347", + "to_node": "node_348", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001670)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_348", + "to_node": "node_349", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002626)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_349", + "to_node": "node_350", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_350", + "to_node": "node_351", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_351", + "to_node": "node_352", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_353", + "to_node": "node_354", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005023)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_354", + "to_node": "node_355", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002257)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_355", + "to_node": "node_356", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.323)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_356", + "to_node": "node_357", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002725)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_357", + "to_node": "node_358", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.136)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_358", + "to_node": "node_359", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.368)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_359", + "to_node": "node_360", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_361", + "to_node": "node_362", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.397)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_362", + "to_node": "node_363", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004578)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_363", + "to_node": "node_364", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002483)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_364", + "to_node": "node_365", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002057)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_365", + "to_node": "node_366", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.247)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_366", + "to_node": "node_367", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.567)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_367", + "to_node": "node_368", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_369", + "to_node": "node_370", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_370", + "to_node": "node_371", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001489)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_371", + "to_node": "node_372", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_372", + "to_node": "node_373", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.309)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_373", + "to_node": "node_374", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_374", + "to_node": "node_375", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.490)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_375", + "to_node": "node_376", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_377", + "to_node": "node_378", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.229)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_378", + "to_node": "node_379", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001642)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_379", + "to_node": "node_380", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_380", + "to_node": "node_381", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_381", + "to_node": "node_382", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_382", + "to_node": "node_383", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_384", + "to_node": "node_385", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_385", + "to_node": "node_386", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_386", + "to_node": "node_387", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_387", + "to_node": "node_388", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_388", + "to_node": "node_389", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_389", + "to_node": "node_390", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_391", + "to_node": "node_392", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000659)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_392", + "to_node": "node_393", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.543)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_393", + "to_node": "node_394", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.443)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_394", + "to_node": "node_395", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_395", + "to_node": "node_396", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_396", + "to_node": "node_397", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.333)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_397", + "to_node": "node_398", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_399", + "to_node": "node_400", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_400", + "to_node": "node_401", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.572)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_401", + "to_node": "node_402", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_402", + "to_node": "node_403", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_403", + "to_node": "node_404", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.391)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_404", + "to_node": "node_405", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 67%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.667)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_405", + "to_node": "node_406", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_407", + "to_node": "node_408", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_408", + "to_node": "node_409", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005015)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_409", + "to_node": "node_410", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_410", + "to_node": "node_411", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_411", + "to_node": "node_412", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.504)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_412", + "to_node": "node_413", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.520)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_413", + "to_node": "node_414", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_415", + "to_node": "node_416", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_416", + "to_node": "node_417", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_417", + "to_node": "node_418", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_418", + "to_node": "node_419", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_419", + "to_node": "node_420", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_420", + "to_node": "node_421", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_422", + "to_node": "node_423", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_423", + "to_node": "node_424", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.541)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_424", + "to_node": "node_425", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.399)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_425", + "to_node": "node_426", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_426", + "to_node": "node_427", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_428", + "to_node": "node_429", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002836)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_429", + "to_node": "node_430", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.339)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_430", + "to_node": "node_431", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_431", + "to_node": "node_432", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_432", + "to_node": "node_433", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_433", + "to_node": "node_434", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.196)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_434", + "to_node": "node_435", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.241)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_435", + "to_node": "node_436", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_437", + "to_node": "node_438", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_438", + "to_node": "node_439", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.513)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_439", + "to_node": "node_440", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.560)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_440", + "to_node": "node_441", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.227)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_441", + "to_node": "node_442", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_442", + "to_node": "node_443", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_444", + "to_node": "node_445", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.393)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_445", + "to_node": "node_446", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_446", + "to_node": "node_447", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.550)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_447", + "to_node": "node_448", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_448", + "to_node": "node_449", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_450", + "to_node": "node_451", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.244)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_451", + "to_node": "node_452", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.447)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_452", + "to_node": "node_453", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.205)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_453", + "to_node": "node_454", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_455", + "to_node": "node_456", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_456", + "to_node": "node_457", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_457", + "to_node": "node_458", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003638)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_458", + "to_node": "node_459", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_459", + "to_node": "node_460", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.570)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_460", + "to_node": "node_461", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_462", + "to_node": "node_463", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_463", + "to_node": "node_464", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_464", + "to_node": "node_465", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_465", + "to_node": "node_466", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_467", + "to_node": "node_468", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.562)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_468", + "to_node": "node_469", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_469", + "to_node": "node_470", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_470", + "to_node": "node_471", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.499)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_471", + "to_node": "node_472", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_472", + "to_node": "node_473", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_474", + "to_node": "node_475", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.626)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_475", + "to_node": "node_476", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.401)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_476", + "to_node": "node_477", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_477", + "to_node": "node_478", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_478", + "to_node": "node_479", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_479", + "to_node": "node_480", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.580)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_480", + "to_node": "node_481", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_482", + "to_node": "node_483", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_483", + "to_node": "node_484", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004657)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_484", + "to_node": "node_485", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.364)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_485", + "to_node": "node_486", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_486", + "to_node": "node_487", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_488", + "to_node": "node_489", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_489", + "to_node": "node_490", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_490", + "to_node": "node_491", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001861)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_491", + "to_node": "node_492", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_492", + "to_node": "node_493", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_494", + "to_node": "node_495", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001251)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_495", + "to_node": "node_496", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.157)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_496", + "to_node": "node_497", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.294)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_497", + "to_node": "node_498", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_498", + "to_node": "node_499", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005091)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_499", + "to_node": "node_500", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_500", + "to_node": "node_501", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.121)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_501", + "to_node": "node_502", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_503", + "to_node": "node_504", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_504", + "to_node": "node_505", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.553)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_505", + "to_node": "node_506", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.637)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_506", + "to_node": "node_507", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.458)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_507", + "to_node": "node_508", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_508", + "to_node": "node_509", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.342)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_509", + "to_node": "node_510", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_511", + "to_node": "node_512", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.346)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_512", + "to_node": "node_513", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_513", + "to_node": "node_514", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_514", + "to_node": "node_515", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_515", + "to_node": "node_516", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.385)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_516", + "to_node": "node_517", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.524)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_517", + "to_node": "node_518", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_519", + "to_node": "node_520", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001751)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_520", + "to_node": "node_521", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003940)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_521", + "to_node": "node_522", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002113)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_522", + "to_node": "node_523", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001344)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_523", + "to_node": "node_524", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_524", + "to_node": "node_525", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.115)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_525", + "to_node": "node_526", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_527", + "to_node": "node_528", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.133)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_528", + "to_node": "node_529", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_529", + "to_node": "node_530", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_530", + "to_node": "node_531", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_531", + "to_node": "node_532", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_533", + "to_node": "node_534", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_534", + "to_node": "node_535", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_535", + "to_node": "node_536", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_536", + "to_node": "node_537", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002083)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_537", + "to_node": "node_538", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_538", + "to_node": "node_539", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_540", + "to_node": "node_541", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.425)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_541", + "to_node": "node_542", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.136)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_542", + "to_node": "node_543", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.148)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_543", + "to_node": "node_544", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_545", + "to_node": "node_546", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.326)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_546", + "to_node": "node_547", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_547", + "to_node": "node_548", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.427)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_548", + "to_node": "node_549", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_549", + "to_node": "node_550", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_550", + "to_node": "node_551", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_551", + "to_node": "node_552", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.211)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_552", + "to_node": "node_553", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_554", + "to_node": "node_555", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.337)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_555", + "to_node": "node_556", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_556", + "to_node": "node_557", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.368)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_557", + "to_node": "node_558", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_559", + "to_node": "node_560", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_560", + "to_node": "node_561", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_561", + "to_node": "node_562", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002150)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_562", + "to_node": "node_563", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.193)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_563", + "to_node": "node_564", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_564", + "to_node": "node_565", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 66%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.661)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_565", + "to_node": "node_566", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_567", + "to_node": "node_568", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002606)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_568", + "to_node": "node_569", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_569", + "to_node": "node_570", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.387)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_570", + "to_node": "node_571", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.420)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_571", + "to_node": "node_572", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_573", + "to_node": "node_574", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_574", + "to_node": "node_575", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004735)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_575", + "to_node": "node_576", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_576", + "to_node": "node_577", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.520)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_577", + "to_node": "node_578", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_578", + "to_node": "node_579", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002568)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_579", + "to_node": "node_580", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.205)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_580", + "to_node": "node_581", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_582", + "to_node": "node_583", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001455)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_583", + "to_node": "node_584", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_584", + "to_node": "node_585", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_585", + "to_node": "node_586", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_586", + "to_node": "node_587", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_587", + "to_node": "node_588", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.647)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_588", + "to_node": "node_589", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_590", + "to_node": "node_591", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_591", + "to_node": "node_592", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001364)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_592", + "to_node": "node_593", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.546)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_593", + "to_node": "node_594", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_594", + "to_node": "node_595", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_595", + "to_node": "node_596", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.153)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_596", + "to_node": "node_597", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.647)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_597", + "to_node": "node_598", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_599", + "to_node": "node_600", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002051)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_600", + "to_node": "node_601", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.117)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_601", + "to_node": "node_602", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_602", + "to_node": "node_603", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_603", + "to_node": "node_604", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_605", + "to_node": "node_606", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001652)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_606", + "to_node": "node_607", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_607", + "to_node": "node_608", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_608", + "to_node": "node_609", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.553)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_609", + "to_node": "node_610", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_611", + "to_node": "node_612", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_612", + "to_node": "node_613", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_613", + "to_node": "node_614", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_614", + "to_node": "node_615", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_615", + "to_node": "node_616", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_616", + "to_node": "node_617", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.227)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_617", + "to_node": "node_618", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_619", + "to_node": "node_620", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.515)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_620", + "to_node": "node_621", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_621", + "to_node": "node_622", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.441)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_622", + "to_node": "node_623", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.344)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_623", + "to_node": "node_624", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_625", + "to_node": "node_626", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_626", + "to_node": "node_627", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.161)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_627", + "to_node": "node_628", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002592)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_628", + "to_node": "node_629", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_629", + "to_node": "node_630", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.623)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_630", + "to_node": "node_631", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_631", + "to_node": "node_632", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_633", + "to_node": "node_634", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.138)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_634", + "to_node": "node_635", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_635", + "to_node": "node_636", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.468)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_636", + "to_node": "node_637", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.131)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_637", + "to_node": "node_638", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_638", + "to_node": "node_639", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.536)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_639", + "to_node": "node_640", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_641", + "to_node": "node_642", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.550)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_642", + "to_node": "node_643", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_643", + "to_node": "node_644", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_644", + "to_node": "node_645", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_646", + "to_node": "node_647", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_647", + "to_node": "node_648", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001984)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_648", + "to_node": "node_649", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001838)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_649", + "to_node": "node_650", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.294)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_650", + "to_node": "node_651", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.585)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_651", + "to_node": "node_652", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_652", + "to_node": "node_653", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_654", + "to_node": "node_655", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_655", + "to_node": "node_656", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_656", + "to_node": "node_657", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.462)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_657", + "to_node": "node_658", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_658", + "to_node": "node_659", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_660", + "to_node": "node_661", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_661", + "to_node": "node_662", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.433)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_662", + "to_node": "node_663", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.416)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_663", + "to_node": "node_664", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_665", + "to_node": "node_666", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_666", + "to_node": "node_667", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_667", + "to_node": "node_668", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_668", + "to_node": "node_669", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.650)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_669", + "to_node": "node_670", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_670", + "to_node": "node_671", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_672", + "to_node": "node_673", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_673", + "to_node": "node_674", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_674", + "to_node": "node_675", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.153)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_675", + "to_node": "node_676", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_677", + "to_node": "node_678", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.211)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_678", + "to_node": "node_679", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_679", + "to_node": "node_680", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.153)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_680", + "to_node": "node_681", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_681", + "to_node": "node_682", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_682", + "to_node": "node_683", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_683", + "to_node": "node_684", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_685", + "to_node": "node_686", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.395)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_686", + "to_node": "node_687", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_687", + "to_node": "node_688", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_688", + "to_node": "node_689", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_689", + "to_node": "node_690", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.416)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_690", + "to_node": "node_691", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_692", + "to_node": "node_693", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002380)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_693", + "to_node": "node_694", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_694", + "to_node": "node_695", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_695", + "to_node": "node_696", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_696", + "to_node": "node_697", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_698", + "to_node": "node_699", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002752)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_699", + "to_node": "node_700", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_700", + "to_node": "node_701", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001751)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_701", + "to_node": "node_702", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.125)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_702", + "to_node": "node_703", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_704", + "to_node": "node_705", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.572)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_705", + "to_node": "node_706", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_706", + "to_node": "node_707", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_707", + "to_node": "node_708", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.562)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_708", + "to_node": "node_709", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_709", + "to_node": "node_710", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_710", + "to_node": "node_711", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_711", + "to_node": "node_712", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_713", + "to_node": "node_714", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_714", + "to_node": "node_715", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.164)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_715", + "to_node": "node_716", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_716", + "to_node": "node_717", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_717", + "to_node": "node_718", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_719", + "to_node": "node_720", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001562)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_720", + "to_node": "node_721", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_721", + "to_node": "node_722", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004851)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_722", + "to_node": "node_723", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_723", + "to_node": "node_724", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.399)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_724", + "to_node": "node_725", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_726", + "to_node": "node_727", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001609)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_727", + "to_node": "node_728", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002095)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_728", + "to_node": "node_729", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_729", + "to_node": "node_730", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_730", + "to_node": "node_731", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_732", + "to_node": "node_733", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001426)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_733", + "to_node": "node_734", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001858)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_734", + "to_node": "node_735", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.130)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_735", + "to_node": "node_736", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002099)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_736", + "to_node": "node_737", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_737", + "to_node": "node_738", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_738", + "to_node": "node_739", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_740", + "to_node": "node_741", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_741", + "to_node": "node_742", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004790)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_742", + "to_node": "node_743", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_743", + "to_node": "node_744", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_745", + "to_node": "node_746", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_746", + "to_node": "node_747", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_747", + "to_node": "node_748", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_748", + "to_node": "node_749", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_749", + "to_node": "node_750", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_750", + "to_node": "node_751", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_751", + "to_node": "node_752", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_753", + "to_node": "node_754", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.142)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_754", + "to_node": "node_755", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.590)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_755", + "to_node": "node_756", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_756", + "to_node": "node_757", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004586)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_757", + "to_node": "node_758", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_758", + "to_node": "node_759", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_760", + "to_node": "node_761", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.304)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_761", + "to_node": "node_762", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.562)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_762", + "to_node": "node_763", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003564)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_763", + "to_node": "node_764", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.321)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_764", + "to_node": "node_765", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004653)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_765", + "to_node": "node_766", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.227)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_766", + "to_node": "node_767", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_768", + "to_node": "node_769", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.227)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_769", + "to_node": "node_770", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.393)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_770", + "to_node": "node_771", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_771", + "to_node": "node_772", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_772", + "to_node": "node_773", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_774", + "to_node": "node_775", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_775", + "to_node": "node_776", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_776", + "to_node": "node_777", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_777", + "to_node": "node_778", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_779", + "to_node": "node_780", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003551)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_780", + "to_node": "node_781", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_781", + "to_node": "node_782", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_782", + "to_node": "node_783", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_783", + "to_node": "node_784", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_784", + "to_node": "node_785", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_786", + "to_node": "node_787", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_787", + "to_node": "node_788", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_788", + "to_node": "node_789", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_789", + "to_node": "node_790", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_791", + "to_node": "node_792", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_792", + "to_node": "node_793", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_793", + "to_node": "node_794", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_794", + "to_node": "node_795", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_795", + "to_node": "node_796", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_797", + "to_node": "node_798", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_798", + "to_node": "node_799", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_799", + "to_node": "node_800", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_800", + "to_node": "node_801", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.372)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_801", + "to_node": "node_802", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.139)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_802", + "to_node": "node_803", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005007)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_803", + "to_node": "node_804", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.152)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_804", + "to_node": "node_805", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_806", + "to_node": "node_807", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_807", + "to_node": "node_808", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.121)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_808", + "to_node": "node_809", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.493)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_809", + "to_node": "node_810", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_810", + "to_node": "node_811", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_812", + "to_node": "node_813", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_813", + "to_node": "node_814", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_814", + "to_node": "node_815", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_815", + "to_node": "node_816", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_816", + "to_node": "node_817", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_818", + "to_node": "node_819", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_819", + "to_node": "node_820", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_820", + "to_node": "node_821", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004487)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_821", + "to_node": "node_822", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_822", + "to_node": "node_823", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_824", + "to_node": "node_825", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_825", + "to_node": "node_826", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001683)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_826", + "to_node": "node_827", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_827", + "to_node": "node_828", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_828", + "to_node": "node_829", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_829", + "to_node": "node_830", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_831", + "to_node": "node_832", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_832", + "to_node": "node_833", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_833", + "to_node": "node_834", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004464)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_834", + "to_node": "node_835", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_835", + "to_node": "node_836", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_837", + "to_node": "node_838", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.170)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_838", + "to_node": "node_839", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.139)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_839", + "to_node": "node_840", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.145)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_840", + "to_node": "node_841", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_841", + "to_node": "node_842", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_842", + "to_node": "node_843", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_844", + "to_node": "node_845", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000747)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_845", + "to_node": "node_846", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_846", + "to_node": "node_847", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_847", + "to_node": "node_848", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_848", + "to_node": "node_849", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.131)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_849", + "to_node": "node_850", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_850", + "to_node": "node_851", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_851", + "to_node": "node_852", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_853", + "to_node": "node_854", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_854", + "to_node": "node_855", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.555)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_855", + "to_node": "node_856", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.312)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_856", + "to_node": "node_857", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_858", + "to_node": "node_859", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_859", + "to_node": "node_860", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.002720)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_860", + "to_node": "node_861", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000928)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_861", + "to_node": "node_862", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_862", + "to_node": "node_863", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_863", + "to_node": "node_864", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.312)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_864", + "to_node": "node_865", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.326)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_865", + "to_node": "node_866", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_867", + "to_node": "node_868", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_868", + "to_node": "node_869", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001525)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_869", + "to_node": "node_870", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.502)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_870", + "to_node": "node_871", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_871", + "to_node": "node_872", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_873", + "to_node": "node_874", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.364)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_874", + "to_node": "node_875", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001049)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_875", + "to_node": "node_876", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.451)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_876", + "to_node": "node_877", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.520)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_877", + "to_node": "node_878", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_878", + "to_node": "node_879", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004521)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_879", + "to_node": "node_880", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_880", + "to_node": "node_881", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_882", + "to_node": "node_883", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_883", + "to_node": "node_884", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.645)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_884", + "to_node": "node_885", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_885", + "to_node": "node_886", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.473)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_886", + "to_node": "node_887", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.361)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_887", + "to_node": "node_888", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_888", + "to_node": "node_889", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_889", + "to_node": "node_890", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_891", + "to_node": "node_892", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_892", + "to_node": "node_893", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001569)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_893", + "to_node": "node_894", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_894", + "to_node": "node_895", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_895", + "to_node": "node_896", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.466)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_896", + "to_node": "node_897", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_898", + "to_node": "node_899", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.136)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_899", + "to_node": "node_900", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.460)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_900", + "to_node": "node_901", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.357)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_901", + "to_node": "node_902", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_902", + "to_node": "node_903", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_903", + "to_node": "node_904", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_905", + "to_node": "node_906", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.418)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_906", + "to_node": "node_907", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_907", + "to_node": "node_908", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_908", + "to_node": "node_909", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_909", + "to_node": "node_910", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_910", + "to_node": "node_911", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_912", + "to_node": "node_913", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002470)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_913", + "to_node": "node_914", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_914", + "to_node": "node_915", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.391)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_915", + "to_node": "node_916", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_916", + "to_node": "node_917", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_917", + "to_node": "node_918", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_918", + "to_node": "node_919", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.520)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_919", + "to_node": "node_920", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_921", + "to_node": "node_922", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.403)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_922", + "to_node": "node_923", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_923", + "to_node": "node_924", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_924", + "to_node": "node_925", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_925", + "to_node": "node_926", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_927", + "to_node": "node_928", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002719)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_928", + "to_node": "node_929", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.139)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_929", + "to_node": "node_930", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_930", + "to_node": "node_931", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_931", + "to_node": "node_932", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_933", + "to_node": "node_934", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_934", + "to_node": "node_935", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.616)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_935", + "to_node": "node_936", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_936", + "to_node": "node_937", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.567)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_937", + "to_node": "node_938", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_939", + "to_node": "node_940", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_940", + "to_node": "node_941", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.131)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_941", + "to_node": "node_942", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.342)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_942", + "to_node": "node_943", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.182)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_943", + "to_node": "node_944", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_944", + "to_node": "node_945", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_945", + "to_node": "node_946", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_946", + "to_node": "node_947", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_948", + "to_node": "node_949", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_949", + "to_node": "node_950", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.196)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_950", + "to_node": "node_951", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.122)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_951", + "to_node": "node_952", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.312)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_952", + "to_node": "node_953", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005149)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_953", + "to_node": "node_954", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002762)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_954", + "to_node": "node_955", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.121)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_955", + "to_node": "node_956", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_957", + "to_node": "node_958", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.570)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_958", + "to_node": "node_959", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003812)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_959", + "to_node": "node_960", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_960", + "to_node": "node_961", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.170)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_961", + "to_node": "node_962", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_962", + "to_node": "node_963", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_964", + "to_node": "node_965", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.339)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_965", + "to_node": "node_966", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002056)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_966", + "to_node": "node_967", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.639)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_967", + "to_node": "node_968", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_968", + "to_node": "node_969", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_969", + "to_node": "node_970", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_970", + "to_node": "node_971", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_972", + "to_node": "node_973", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_973", + "to_node": "node_974", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.642)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_974", + "to_node": "node_975", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.582)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_975", + "to_node": "node_976", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.391)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_976", + "to_node": "node_977", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_978", + "to_node": "node_979", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.211)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_979", + "to_node": "node_980", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_980", + "to_node": "node_981", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.550)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_981", + "to_node": "node_982", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_983", + "to_node": "node_984", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_984", + "to_node": "node_985", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.153)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_985", + "to_node": "node_986", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_986", + "to_node": "node_987", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001654)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_987", + "to_node": "node_988", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_988", + "to_node": "node_989", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_989", + "to_node": "node_990", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.560)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_990", + "to_node": "node_991", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_992", + "to_node": "node_993", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001283)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_993", + "to_node": "node_994", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_994", + "to_node": "node_995", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.263)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_995", + "to_node": "node_996", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004472)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_996", + "to_node": "node_997", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_997", + "to_node": "node_998", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_999", + "to_node": "node_1000", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.196)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1000", + "to_node": "node_1001", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001551)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1001", + "to_node": "node_1002", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002033)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1002", + "to_node": "node_1003", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.553)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1003", + "to_node": "node_1004", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.600)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1004", + "to_node": "node_1005", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1005", + "to_node": "node_1006", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.263)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1006", + "to_node": "node_1007", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1008", + "to_node": "node_1009", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1009", + "to_node": "node_1010", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003549)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1010", + "to_node": "node_1011", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1011", + "to_node": "node_1012", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002369)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1012", + "to_node": "node_1013", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1013", + "to_node": "node_1014", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.468)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1014", + "to_node": "node_1015", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1016", + "to_node": "node_1017", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002025)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1017", + "to_node": "node_1018", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.267)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1018", + "to_node": "node_1019", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1019", + "to_node": "node_1020", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1021", + "to_node": "node_1022", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003823)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1022", + "to_node": "node_1023", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1023", + "to_node": "node_1024", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.241)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1024", + "to_node": "node_1025", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1025", + "to_node": "node_1026", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1027", + "to_node": "node_1028", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.650)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1028", + "to_node": "node_1029", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1029", + "to_node": "node_1030", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1030", + "to_node": "node_1031", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1032", + "to_node": "node_1033", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1033", + "to_node": "node_1034", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1034", + "to_node": "node_1035", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1035", + "to_node": "node_1036", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1037", + "to_node": "node_1038", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1038", + "to_node": "node_1039", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1039", + "to_node": "node_1040", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1040", + "to_node": "node_1041", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1042", + "to_node": "node_1043", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.142)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1043", + "to_node": "node_1044", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1044", + "to_node": "node_1045", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001675)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1045", + "to_node": "node_1046", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1046", + "to_node": "node_1047", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1047", + "to_node": "node_1048", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1049", + "to_node": "node_1050", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004814)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1050", + "to_node": "node_1051", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1051", + "to_node": "node_1052", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1052", + "to_node": "node_1053", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1054", + "to_node": "node_1055", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1055", + "to_node": "node_1056", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1056", + "to_node": "node_1057", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1058", + "to_node": "node_1059", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1059", + "to_node": "node_1060", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003645)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1060", + "to_node": "node_1061", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001638)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1061", + "to_node": "node_1062", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1062", + "to_node": "node_1063", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1063", + "to_node": "node_1064", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1064", + "to_node": "node_1065", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1066", + "to_node": "node_1067", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001644)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1067", + "to_node": "node_1068", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001775)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1068", + "to_node": "node_1069", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1069", + "to_node": "node_1070", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1070", + "to_node": "node_1071", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.342)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1071", + "to_node": "node_1072", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.160)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1072", + "to_node": "node_1073", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1074", + "to_node": "node_1075", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.203)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1075", + "to_node": "node_1076", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1076", + "to_node": "node_1077", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1077", + "to_node": "node_1078", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1078", + "to_node": "node_1079", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1080", + "to_node": "node_1081", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001146)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1081", + "to_node": "node_1082", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004528)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1082", + "to_node": "node_1083", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002012)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1083", + "to_node": "node_1084", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1084", + "to_node": "node_1085", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.263)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1085", + "to_node": "node_1086", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.350)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1086", + "to_node": "node_1087", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1087", + "to_node": "node_1088", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1089", + "to_node": "node_1090", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001552)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1090", + "to_node": "node_1091", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.002893)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1091", + "to_node": "node_1092", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1092", + "to_node": "node_1093", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1093", + "to_node": "node_1094", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1094", + "to_node": "node_1095", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.147)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1095", + "to_node": "node_1096", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.481)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1096", + "to_node": "node_1097", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1098", + "to_node": "node_1099", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1099", + "to_node": "node_1100", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1100", + "to_node": "node_1101", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1101", + "to_node": "node_1102", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1103", + "to_node": "node_1104", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.269)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1104", + "to_node": "node_1105", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.147)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1105", + "to_node": "node_1106", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1106", + "to_node": "node_1107", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.590)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1107", + "to_node": "node_1108", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1108", + "to_node": "node_1109", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1109", + "to_node": "node_1110", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1111", + "to_node": "node_1112", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1112", + "to_node": "node_1113", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1113", + "to_node": "node_1114", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1114", + "to_node": "node_1115", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1115", + "to_node": "node_1116", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1117", + "to_node": "node_1118", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1118", + "to_node": "node_1119", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001765)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1119", + "to_node": "node_1120", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.420)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1120", + "to_node": "node_1121", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005115)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1121", + "to_node": "node_1122", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.116)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1122", + "to_node": "node_1123", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1124", + "to_node": "node_1125", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.490)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1125", + "to_node": "node_1126", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001588)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1126", + "to_node": "node_1127", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.372)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1127", + "to_node": "node_1128", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1128", + "to_node": "node_1129", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1129", + "to_node": "node_1130", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1130", + "to_node": "node_1131", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1131", + "to_node": "node_1132", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1133", + "to_node": "node_1134", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.178)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1134", + "to_node": "node_1135", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.538)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1135", + "to_node": "node_1136", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.359)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1136", + "to_node": "node_1137", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1137", + "to_node": "node_1138", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1139", + "to_node": "node_1140", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1140", + "to_node": "node_1141", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1141", + "to_node": "node_1142", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1142", + "to_node": "node_1143", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1144", + "to_node": "node_1145", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001608)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1145", + "to_node": "node_1146", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002095)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1146", + "to_node": "node_1147", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.458)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1147", + "to_node": "node_1148", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001940)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1148", + "to_node": "node_1149", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002094)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1149", + "to_node": "node_1150", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1150", + "to_node": "node_1151", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.460)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1151", + "to_node": "node_1152", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1153", + "to_node": "node_1154", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1154", + "to_node": "node_1155", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.513)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1155", + "to_node": "node_1156", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1156", + "to_node": "node_1157", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1157", + "to_node": "node_1158", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001956)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1158", + "to_node": "node_1159", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004752)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1159", + "to_node": "node_1160", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1160", + "to_node": "node_1161", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1162", + "to_node": "node_1163", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002544)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1163", + "to_node": "node_1164", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1164", + "to_node": "node_1165", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1165", + "to_node": "node_1166", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1167", + "to_node": "node_1168", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.116)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1168", + "to_node": "node_1169", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.138)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1169", + "to_node": "node_1170", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1170", + "to_node": "node_1171", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1172", + "to_node": "node_1173", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1173", + "to_node": "node_1174", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1174", + "to_node": "node_1175", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.479)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1175", + "to_node": "node_1176", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1176", + "to_node": "node_1177", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.353)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1177", + "to_node": "node_1178", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.647)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1178", + "to_node": "node_1179", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1180", + "to_node": "node_1181", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1181", + "to_node": "node_1182", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1182", + "to_node": "node_1183", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1183", + "to_node": "node_1184", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1184", + "to_node": "node_1185", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1186", + "to_node": "node_1187", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001512)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1187", + "to_node": "node_1188", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004383)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1188", + "to_node": "node_1189", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1189", + "to_node": "node_1190", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1190", + "to_node": "node_1191", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1192", + "to_node": "node_1193", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001614)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1193", + "to_node": "node_1194", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1194", + "to_node": "node_1195", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1195", + "to_node": "node_1196", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.570)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1196", + "to_node": "node_1197", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1197", + "to_node": "node_1198", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.269)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1198", + "to_node": "node_1199", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1200", + "to_node": "node_1201", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1201", + "to_node": "node_1202", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1202", + "to_node": "node_1203", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002094)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1203", + "to_node": "node_1204", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.427)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1204", + "to_node": "node_1205", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1205", + "to_node": "node_1206", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1206", + "to_node": "node_1207", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1208", + "to_node": "node_1209", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1209", + "to_node": "node_1210", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.263)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1210", + "to_node": "node_1211", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001371)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1211", + "to_node": "node_1212", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.178)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1212", + "to_node": "node_1213", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1213", + "to_node": "node_1214", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1214", + "to_node": "node_1215", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1216", + "to_node": "node_1217", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003706)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1217", + "to_node": "node_1218", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001526)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1218", + "to_node": "node_1219", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1219", + "to_node": "node_1220", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1220", + "to_node": "node_1221", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1222", + "to_node": "node_1223", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1223", + "to_node": "node_1224", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.355)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1224", + "to_node": "node_1225", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1225", + "to_node": "node_1226", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1227", + "to_node": "node_1228", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1228", + "to_node": "node_1229", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1229", + "to_node": "node_1230", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1230", + "to_node": "node_1231", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.443)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1231", + "to_node": "node_1232", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1232", + "to_node": "node_1233", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1234", + "to_node": "node_1235", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1235", + "to_node": "node_1236", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.468)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1236", + "to_node": "node_1237", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.348)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1237", + "to_node": "node_1238", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1238", + "to_node": "node_1239", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.366)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1239", + "to_node": "node_1240", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1241", + "to_node": "node_1242", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1242", + "to_node": "node_1243", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.389)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1243", + "to_node": "node_1244", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.437)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1244", + "to_node": "node_1245", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1245", + "to_node": "node_1246", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1246", + "to_node": "node_1247", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1248", + "to_node": "node_1249", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1249", + "to_node": "node_1250", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001130)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1250", + "to_node": "node_1251", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1251", + "to_node": "node_1252", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1252", + "to_node": "node_1253", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.381)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1253", + "to_node": "node_1254", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1254", + "to_node": "node_1255", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.321)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1255", + "to_node": "node_1256", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1257", + "to_node": "node_1258", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1258", + "to_node": "node_1259", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1259", + "to_node": "node_1260", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1260", + "to_node": "node_1261", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1262", + "to_node": "node_1263", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1263", + "to_node": "node_1264", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1264", + "to_node": "node_1265", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1265", + "to_node": "node_1266", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1266", + "to_node": "node_1267", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.445)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1267", + "to_node": "node_1268", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1269", + "to_node": "node_1270", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.481)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1270", + "to_node": "node_1271", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.206)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1271", + "to_node": "node_1272", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1272", + "to_node": "node_1273", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1273", + "to_node": "node_1274", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.538)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1274", + "to_node": "node_1275", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1275", + "to_node": "node_1276", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1276", + "to_node": "node_1277", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1278", + "to_node": "node_1279", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1279", + "to_node": "node_1280", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.312)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1280", + "to_node": "node_1281", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1281", + "to_node": "node_1282", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1283", + "to_node": "node_1284", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1284", + "to_node": "node_1285", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1285", + "to_node": "node_1286", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.513)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1286", + "to_node": "node_1287", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1288", + "to_node": "node_1289", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1289", + "to_node": "node_1290", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1290", + "to_node": "node_1291", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1291", + "to_node": "node_1292", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1292", + "to_node": "node_1293", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1293", + "to_node": "node_1294", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1295", + "to_node": "node_1296", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1296", + "to_node": "node_1297", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004540)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1297", + "to_node": "node_1298", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1298", + "to_node": "node_1299", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.271)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1299", + "to_node": "node_1300", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1301", + "to_node": "node_1302", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001767)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1302", + "to_node": "node_1303", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1303", + "to_node": "node_1304", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1304", + "to_node": "node_1305", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1305", + "to_node": "node_1306", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1306", + "to_node": "node_1307", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1308", + "to_node": "node_1309", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1309", + "to_node": "node_1310", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1310", + "to_node": "node_1311", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.441)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1311", + "to_node": "node_1312", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004129)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1312", + "to_node": "node_1313", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.244)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1313", + "to_node": "node_1314", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1314", + "to_node": "node_1315", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1315", + "to_node": "node_1316", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1317", + "to_node": "node_1318", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1318", + "to_node": "node_1319", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001722)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1319", + "to_node": "node_1320", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1320", + "to_node": "node_1321", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1321", + "to_node": "node_1322", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1323", + "to_node": "node_1324", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1324", + "to_node": "node_1325", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1325", + "to_node": "node_1326", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1326", + "to_node": "node_1327", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001763)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1327", + "to_node": "node_1328", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.117)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1328", + "to_node": "node_1329", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1330", + "to_node": "node_1331", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.439)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1331", + "to_node": "node_1332", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1332", + "to_node": "node_1333", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1333", + "to_node": "node_1334", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1335", + "to_node": "node_1336", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1336", + "to_node": "node_1337", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.453)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1337", + "to_node": "node_1338", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.250)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1338", + "to_node": "node_1339", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1340", + "to_node": "node_1341", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001658)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1341", + "to_node": "node_1342", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.342)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1342", + "to_node": "node_1343", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.289)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1343", + "to_node": "node_1344", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1344", + "to_node": "node_1345", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1346", + "to_node": "node_1347", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.399)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1347", + "to_node": "node_1348", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1348", + "to_node": "node_1349", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1349", + "to_node": "node_1350", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1350", + "to_node": "node_1351", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.211)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1351", + "to_node": "node_1352", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1353", + "to_node": "node_1354", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001828)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1354", + "to_node": "node_1355", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1355", + "to_node": "node_1356", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1356", + "to_node": "node_1357", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1358", + "to_node": "node_1359", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1359", + "to_node": "node_1360", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1360", + "to_node": "node_1361", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1361", + "to_node": "node_1362", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002066)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1362", + "to_node": "node_1363", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001913)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1363", + "to_node": "node_1364", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1364", + "to_node": "node_1365", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1365", + "to_node": "node_1366", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1367", + "to_node": "node_1368", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001622)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1368", + "to_node": "node_1369", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1369", + "to_node": "node_1370", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1370", + "to_node": "node_1371", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1371", + "to_node": "node_1372", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1372", + "to_node": "node_1373", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1373", + "to_node": "node_1374", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1375", + "to_node": "node_1376", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1376", + "to_node": "node_1377", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1377", + "to_node": "node_1378", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.462)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1378", + "to_node": "node_1379", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1379", + "to_node": "node_1380", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1381", + "to_node": "node_1382", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.143)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1382", + "to_node": "node_1383", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1383", + "to_node": "node_1384", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.592)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1384", + "to_node": "node_1385", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1385", + "to_node": "node_1386", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1386", + "to_node": "node_1387", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.355)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1387", + "to_node": "node_1388", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1388", + "to_node": "node_1389", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1390", + "to_node": "node_1391", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1391", + "to_node": "node_1392", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.441)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1392", + "to_node": "node_1393", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.193)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1393", + "to_node": "node_1394", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1395", + "to_node": "node_1396", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.527)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1396", + "to_node": "node_1397", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.241)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1397", + "to_node": "node_1398", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.208)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1398", + "to_node": "node_1399", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002539)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1399", + "to_node": "node_1400", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1400", + "to_node": "node_1401", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1401", + "to_node": "node_1402", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1403", + "to_node": "node_1404", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1404", + "to_node": "node_1405", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.558)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1405", + "to_node": "node_1406", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1406", + "to_node": "node_1407", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1407", + "to_node": "node_1408", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1408", + "to_node": "node_1409", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1409", + "to_node": "node_1410", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1411", + "to_node": "node_1412", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1412", + "to_node": "node_1413", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.427)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1413", + "to_node": "node_1414", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.250)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1414", + "to_node": "node_1415", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1415", + "to_node": "node_1416", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1417", + "to_node": "node_1418", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1418", + "to_node": "node_1419", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.623)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1419", + "to_node": "node_1420", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1420", + "to_node": "node_1421", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.531)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1421", + "to_node": "node_1422", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1423", + "to_node": "node_1424", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1424", + "to_node": "node_1425", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1425", + "to_node": "node_1426", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1426", + "to_node": "node_1427", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.138)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1427", + "to_node": "node_1428", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1428", + "to_node": "node_1429", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1430", + "to_node": "node_1431", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001545)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1431", + "to_node": "node_1432", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.139)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1432", + "to_node": "node_1433", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1433", + "to_node": "node_1434", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1434", + "to_node": "node_1435", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.513)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1435", + "to_node": "node_1436", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1436", + "to_node": "node_1437", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1438", + "to_node": "node_1439", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001560)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1439", + "to_node": "node_1440", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.645)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1440", + "to_node": "node_1441", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.294)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1441", + "to_node": "node_1442", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003599)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1442", + "to_node": "node_1443", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1443", + "to_node": "node_1444", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1445", + "to_node": "node_1446", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1446", + "to_node": "node_1447", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1447", + "to_node": "node_1448", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1448", + "to_node": "node_1449", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1449", + "to_node": "node_1450", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1451", + "to_node": "node_1452", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001498)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1452", + "to_node": "node_1453", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001483)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1453", + "to_node": "node_1454", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.289)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1454", + "to_node": "node_1455", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.541)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1455", + "to_node": "node_1456", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1456", + "to_node": "node_1457", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.326)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1457", + "to_node": "node_1458", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1459", + "to_node": "node_1460", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002336)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1460", + "to_node": "node_1461", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001792)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1461", + "to_node": "node_1462", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.326)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1462", + "to_node": "node_1463", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1464", + "to_node": "node_1465", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002072)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1465", + "to_node": "node_1466", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1466", + "to_node": "node_1467", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001717)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1467", + "to_node": "node_1468", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.647)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1468", + "to_node": "node_1469", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002700)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1469", + "to_node": "node_1470", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004977)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1470", + "to_node": "node_1471", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.147)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1471", + "to_node": "node_1472", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1473", + "to_node": "node_1474", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.403)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1474", + "to_node": "node_1475", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1475", + "to_node": "node_1476", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1476", + "to_node": "node_1477", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1478", + "to_node": "node_1479", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.350)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1479", + "to_node": "node_1480", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1480", + "to_node": "node_1481", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1481", + "to_node": "node_1482", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1483", + "to_node": "node_1484", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.272)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1484", + "to_node": "node_1485", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.241)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1485", + "to_node": "node_1486", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1486", + "to_node": "node_1487", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1487", + "to_node": "node_1488", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1489", + "to_node": "node_1490", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004697)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1490", + "to_node": "node_1491", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002088)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1491", + "to_node": "node_1492", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.229)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1492", + "to_node": "node_1493", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1493", + "to_node": "node_1494", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1495", + "to_node": "node_1496", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002058)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1496", + "to_node": "node_1497", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.247)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1497", + "to_node": "node_1498", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1498", + "to_node": "node_1499", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1499", + "to_node": "node_1500", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1501", + "to_node": "node_1502", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1502", + "to_node": "node_1503", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1503", + "to_node": "node_1504", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1504", + "to_node": "node_1505", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1505", + "to_node": "node_1506", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1507", + "to_node": "node_1508", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.437)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1508", + "to_node": "node_1509", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.182)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1509", + "to_node": "node_1510", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1510", + "to_node": "node_1511", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1511", + "to_node": "node_1512", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1512", + "to_node": "node_1513", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1514", + "to_node": "node_1515", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005187)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1515", + "to_node": "node_1516", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1516", + "to_node": "node_1517", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1517", + "to_node": "node_1518", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1518", + "to_node": "node_1519", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1520", + "to_node": "node_1521", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1521", + "to_node": "node_1522", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1522", + "to_node": "node_1523", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1523", + "to_node": "node_1524", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1525", + "to_node": "node_1526", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.321)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1526", + "to_node": "node_1527", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1527", + "to_node": "node_1528", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1528", + "to_node": "node_1529", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1530", + "to_node": "node_1531", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.333)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1531", + "to_node": "node_1532", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1532", + "to_node": "node_1533", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1533", + "to_node": "node_1534", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1534", + "to_node": "node_1535", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1536", + "to_node": "node_1537", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.595)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1537", + "to_node": "node_1538", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.166)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1538", + "to_node": "node_1539", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001547)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1539", + "to_node": "node_1540", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.323)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1540", + "to_node": "node_1541", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 66%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.661)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1541", + "to_node": "node_1542", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1542", + "to_node": "node_1543", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1544", + "to_node": "node_1545", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1545", + "to_node": "node_1546", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1546", + "to_node": "node_1547", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1547", + "to_node": "node_1548", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1548", + "to_node": "node_1549", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1549", + "to_node": "node_1550", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1551", + "to_node": "node_1552", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001761)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1552", + "to_node": "node_1553", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1553", + "to_node": "node_1554", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1554", + "to_node": "node_1555", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1555", + "to_node": "node_1556", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1556", + "to_node": "node_1557", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1557", + "to_node": "node_1558", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1559", + "to_node": "node_1560", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1560", + "to_node": "node_1561", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1561", + "to_node": "node_1562", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002931)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1562", + "to_node": "node_1563", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1563", + "to_node": "node_1564", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1564", + "to_node": "node_1565", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1565", + "to_node": "node_1566", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1566", + "to_node": "node_1567", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1568", + "to_node": "node_1569", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001661)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1569", + "to_node": "node_1570", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1570", + "to_node": "node_1571", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004431)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1571", + "to_node": "node_1572", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001529)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1572", + "to_node": "node_1573", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1573", + "to_node": "node_1574", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.289)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1574", + "to_node": "node_1575", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1575", + "to_node": "node_1576", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1577", + "to_node": "node_1578", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.147)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1578", + "to_node": "node_1579", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003301)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1579", + "to_node": "node_1580", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1580", + "to_node": "node_1581", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1581", + "to_node": "node_1582", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1582", + "to_node": "node_1583", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1583", + "to_node": "node_1584", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1585", + "to_node": "node_1586", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1586", + "to_node": "node_1587", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.634)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1587", + "to_node": "node_1588", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.653)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1588", + "to_node": "node_1589", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1590", + "to_node": "node_1591", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.309)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1591", + "to_node": "node_1592", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.610)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1592", + "to_node": "node_1593", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1593", + "to_node": "node_1594", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1594", + "to_node": "node_1595", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1596", + "to_node": "node_1597", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1597", + "to_node": "node_1598", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1598", + "to_node": "node_1599", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.362)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1599", + "to_node": "node_1600", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1601", + "to_node": "node_1602", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.431)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1602", + "to_node": "node_1603", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.205)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1603", + "to_node": "node_1604", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1604", + "to_node": "node_1605", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.344)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1605", + "to_node": "node_1606", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1606", + "to_node": "node_1607", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1608", + "to_node": "node_1609", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1609", + "to_node": "node_1610", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004852)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1610", + "to_node": "node_1611", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1611", + "to_node": "node_1612", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1612", + "to_node": "node_1613", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1614", + "to_node": "node_1615", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.145)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1615", + "to_node": "node_1616", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1616", + "to_node": "node_1617", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002048)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1617", + "to_node": "node_1618", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1618", + "to_node": "node_1619", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1620", + "to_node": "node_1621", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002984)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1621", + "to_node": "node_1622", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1622", + "to_node": "node_1623", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1623", + "to_node": "node_1624", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1624", + "to_node": "node_1625", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002579)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1625", + "to_node": "node_1626", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.592)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1626", + "to_node": "node_1627", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1627", + "to_node": "node_1628", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1629", + "to_node": "node_1630", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1630", + "to_node": "node_1631", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1631", + "to_node": "node_1632", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002162)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1632", + "to_node": "node_1633", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.389)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1633", + "to_node": "node_1634", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1634", + "to_node": "node_1635", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1635", + "to_node": "node_1636", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1636", + "to_node": "node_1637", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1638", + "to_node": "node_1639", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004927)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1639", + "to_node": "node_1640", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1640", + "to_node": "node_1641", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1641", + "to_node": "node_1642", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1642", + "to_node": "node_1643", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1643", + "to_node": "node_1644", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.577)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1644", + "to_node": "node_1645", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1646", + "to_node": "node_1647", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000883)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1647", + "to_node": "node_1648", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1648", + "to_node": "node_1649", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1649", + "to_node": "node_1650", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.117)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1650", + "to_node": "node_1651", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1651", + "to_node": "node_1652", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1653", + "to_node": "node_1654", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1654", + "to_node": "node_1655", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001449)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1655", + "to_node": "node_1656", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.639)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1656", + "to_node": "node_1657", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1658", + "to_node": "node_1659", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.499)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1659", + "to_node": "node_1660", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1660", + "to_node": "node_1661", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.567)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1661", + "to_node": "node_1662", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.379)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1662", + "to_node": "node_1663", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1664", + "to_node": "node_1665", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1665", + "to_node": "node_1666", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1666", + "to_node": "node_1667", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1667", + "to_node": "node_1668", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1668", + "to_node": "node_1669", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.429)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1669", + "to_node": "node_1670", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1671", + "to_node": "node_1672", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001502)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1672", + "to_node": "node_1673", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001622)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1673", + "to_node": "node_1674", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1674", + "to_node": "node_1675", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1675", + "to_node": "node_1676", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.206)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1676", + "to_node": "node_1677", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1678", + "to_node": "node_1679", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1679", + "to_node": "node_1680", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1680", + "to_node": "node_1681", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001965)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1681", + "to_node": "node_1682", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001820)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1682", + "to_node": "node_1683", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1683", + "to_node": "node_1684", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1684", + "to_node": "node_1685", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1686", + "to_node": "node_1687", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1687", + "to_node": "node_1688", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1688", + "to_node": "node_1689", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.340)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1689", + "to_node": "node_1690", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1691", + "to_node": "node_1692", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1692", + "to_node": "node_1693", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.117)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1693", + "to_node": "node_1694", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.351)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1694", + "to_node": "node_1695", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1695", + "to_node": "node_1696", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1696", + "to_node": "node_1697", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1698", + "to_node": "node_1699", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.149)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1699", + "to_node": "node_1700", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1700", + "to_node": "node_1701", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1701", + "to_node": "node_1702", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.647)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1702", + "to_node": "node_1703", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.577)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1703", + "to_node": "node_1704", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1705", + "to_node": "node_1706", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.121)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1706", + "to_node": "node_1707", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1707", + "to_node": "node_1708", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.244)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1708", + "to_node": "node_1709", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1710", + "to_node": "node_1711", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1711", + "to_node": "node_1712", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.351)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1712", + "to_node": "node_1713", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1713", + "to_node": "node_1714", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.546)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1714", + "to_node": "node_1715", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1715", + "to_node": "node_1716", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1717", + "to_node": "node_1718", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1718", + "to_node": "node_1719", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002000)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1719", + "to_node": "node_1720", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1720", + "to_node": "node_1721", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1722", + "to_node": "node_1723", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1723", + "to_node": "node_1724", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1724", + "to_node": "node_1725", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1725", + "to_node": "node_1726", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.149)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1726", + "to_node": "node_1727", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1728", + "to_node": "node_1729", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1729", + "to_node": "node_1730", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1730", + "to_node": "node_1731", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004594)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1731", + "to_node": "node_1732", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1732", + "to_node": "node_1733", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.585)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1733", + "to_node": "node_1734", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1734", + "to_node": "node_1735", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.410)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1735", + "to_node": "node_1736", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1737", + "to_node": "node_1738", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.401)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1738", + "to_node": "node_1739", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.616)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1739", + "to_node": "node_1740", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.575)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1740", + "to_node": "node_1741", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1742", + "to_node": "node_1743", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002748)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1743", + "to_node": "node_1744", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1744", + "to_node": "node_1745", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.362)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1745", + "to_node": "node_1746", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1746", + "to_node": "node_1747", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1747", + "to_node": "node_1748", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1749", + "to_node": "node_1750", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1750", + "to_node": "node_1751", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1751", + "to_node": "node_1752", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1752", + "to_node": "node_1753", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1754", + "to_node": "node_1755", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1755", + "to_node": "node_1756", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.136)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1756", + "to_node": "node_1757", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.222)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1757", + "to_node": "node_1758", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1758", + "to_node": "node_1759", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1759", + "to_node": "node_1760", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1761", + "to_node": "node_1762", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1762", + "to_node": "node_1763", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1763", + "to_node": "node_1764", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1764", + "to_node": "node_1765", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.488)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1765", + "to_node": "node_1766", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1766", + "to_node": "node_1767", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1768", + "to_node": "node_1769", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002141)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1769", + "to_node": "node_1770", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1770", + "to_node": "node_1771", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.385)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1771", + "to_node": "node_1772", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.645)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1772", + "to_node": "node_1773", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1773", + "to_node": "node_1774", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1775", + "to_node": "node_1776", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.511)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1776", + "to_node": "node_1777", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1777", + "to_node": "node_1778", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1778", + "to_node": "node_1779", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1779", + "to_node": "node_1780", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.136)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1780", + "to_node": "node_1781", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1782", + "to_node": "node_1783", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1783", + "to_node": "node_1784", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1784", + "to_node": "node_1785", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1785", + "to_node": "node_1786", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1786", + "to_node": "node_1787", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1788", + "to_node": "node_1789", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.653)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1789", + "to_node": "node_1790", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.456)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1790", + "to_node": "node_1791", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002743)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1791", + "to_node": "node_1792", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.129)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1792", + "to_node": "node_1793", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1793", + "to_node": "node_1794", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1795", + "to_node": "node_1796", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.312)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1796", + "to_node": "node_1797", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003216)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1797", + "to_node": "node_1798", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.323)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1798", + "to_node": "node_1799", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.133)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1799", + "to_node": "node_1800", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1800", + "to_node": "node_1801", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.562)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1801", + "to_node": "node_1802", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1802", + "to_node": "node_1803", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1804", + "to_node": "node_1805", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002743)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1805", + "to_node": "node_1806", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.129)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1806", + "to_node": "node_1807", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1807", + "to_node": "node_1808", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1809", + "to_node": "node_1810", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1810", + "to_node": "node_1811", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1811", + "to_node": "node_1812", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.323)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1812", + "to_node": "node_1813", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1814", + "to_node": "node_1815", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.374)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1815", + "to_node": "node_1816", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1816", + "to_node": "node_1817", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1817", + "to_node": "node_1818", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1818", + "to_node": "node_1819", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1819", + "to_node": "node_1820", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.570)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1820", + "to_node": "node_1821", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1822", + "to_node": "node_1823", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1823", + "to_node": "node_1824", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1824", + "to_node": "node_1825", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1825", + "to_node": "node_1826", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.399)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1826", + "to_node": "node_1827", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1827", + "to_node": "node_1828", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1828", + "to_node": "node_1829", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.431)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1829", + "to_node": "node_1830", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1831", + "to_node": "node_1832", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1832", + "to_node": "node_1833", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1833", + "to_node": "node_1834", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.353)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1834", + "to_node": "node_1835", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.130)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1835", + "to_node": "node_1836", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.211)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1836", + "to_node": "node_1837", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.160)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1837", + "to_node": "node_1838", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1839", + "to_node": "node_1840", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001042)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1840", + "to_node": "node_1841", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1841", + "to_node": "node_1842", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1842", + "to_node": "node_1843", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1843", + "to_node": "node_1844", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001923)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1844", + "to_node": "node_1845", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1845", + "to_node": "node_1846", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1847", + "to_node": "node_1848", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1848", + "to_node": "node_1849", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.247)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1849", + "to_node": "node_1850", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1850", + "to_node": "node_1851", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1851", + "to_node": "node_1852", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1852", + "to_node": "node_1853", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1853", + "to_node": "node_1854", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1854", + "to_node": "node_1855", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1856", + "to_node": "node_1857", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.608)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1857", + "to_node": "node_1858", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1858", + "to_node": "node_1859", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.321)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1859", + "to_node": "node_1860", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.172)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1860", + "to_node": "node_1861", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1861", + "to_node": "node_1862", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1862", + "to_node": "node_1863", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1863", + "to_node": "node_1864", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1865", + "to_node": "node_1866", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1866", + "to_node": "node_1867", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1867", + "to_node": "node_1868", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002027)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1868", + "to_node": "node_1869", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.377)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1869", + "to_node": "node_1870", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1870", + "to_node": "node_1871", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1871", + "to_node": "node_1872", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1873", + "to_node": "node_1874", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1874", + "to_node": "node_1875", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1875", + "to_node": "node_1876", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1876", + "to_node": "node_1877", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1877", + "to_node": "node_1878", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1879", + "to_node": "node_1880", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1880", + "to_node": "node_1881", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.431)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1881", + "to_node": "node_1882", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001802)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1882", + "to_node": "node_1883", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.422)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1883", + "to_node": "node_1884", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1885", + "to_node": "node_1886", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.362)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1886", + "to_node": "node_1887", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.178)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1887", + "to_node": "node_1888", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.383)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1888", + "to_node": "node_1889", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.116)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1889", + "to_node": "node_1890", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.309)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1890", + "to_node": "node_1891", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1891", + "to_node": "node_1892", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.410)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1892", + "to_node": "node_1893", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1894", + "to_node": "node_1895", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1895", + "to_node": "node_1896", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001940)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1896", + "to_node": "node_1897", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002341)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1897", + "to_node": "node_1898", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1898", + "to_node": "node_1899", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.182)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1899", + "to_node": "node_1900", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.534)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1900", + "to_node": "node_1901", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1902", + "to_node": "node_1903", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.522)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1903", + "to_node": "node_1904", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004863)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1904", + "to_node": "node_1905", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004917)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1905", + "to_node": "node_1906", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.174)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1906", + "to_node": "node_1907", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1908", + "to_node": "node_1909", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.161)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1909", + "to_node": "node_1910", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1910", + "to_node": "node_1911", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.460)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1911", + "to_node": "node_1912", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1912", + "to_node": "node_1913", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1913", + "to_node": "node_1914", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1914", + "to_node": "node_1915", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1915", + "to_node": "node_1916", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1917", + "to_node": "node_1918", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1918", + "to_node": "node_1919", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1919", + "to_node": "node_1920", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1920", + "to_node": "node_1921", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1922", + "to_node": "node_1923", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.001942)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1923", + "to_node": "node_1924", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1924", + "to_node": "node_1925", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1925", + "to_node": "node_1926", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001580)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1926", + "to_node": "node_1927", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1927", + "to_node": "node_1928", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.486)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1928", + "to_node": "node_1929", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1930", + "to_node": "node_1931", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.610)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1931", + "to_node": "node_1932", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1932", + "to_node": "node_1933", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1933", + "to_node": "node_1934", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1934", + "to_node": "node_1935", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1936", + "to_node": "node_1937", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.186)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1937", + "to_node": "node_1938", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1938", + "to_node": "node_1939", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1939", + "to_node": "node_1940", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.621)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1940", + "to_node": "node_1941", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1941", + "to_node": "node_1942", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1942", + "to_node": "node_1943", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.468)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1943", + "to_node": "node_1944", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1945", + "to_node": "node_1946", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1946", + "to_node": "node_1947", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1947", + "to_node": "node_1948", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004752)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1948", + "to_node": "node_1949", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.534)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1949", + "to_node": "node_1950", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1950", + "to_node": "node_1951", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001784)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1951", + "to_node": "node_1952", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.439)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1952", + "to_node": "node_1953", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1954", + "to_node": "node_1955", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1955", + "to_node": "node_1956", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001971)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1956", + "to_node": "node_1957", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1957", + "to_node": "node_1958", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1958", + "to_node": "node_1959", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1960", + "to_node": "node_1961", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005129)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1961", + "to_node": "node_1962", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.650)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1962", + "to_node": "node_1963", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1963", + "to_node": "node_1964", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.125)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1964", + "to_node": "node_1965", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1965", + "to_node": "node_1966", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.477)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1966", + "to_node": "node_1967", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1968", + "to_node": "node_1969", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004432)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1969", + "to_node": "node_1970", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.289)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1970", + "to_node": "node_1971", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.435)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1971", + "to_node": "node_1972", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.513)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1972", + "to_node": "node_1973", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1974", + "to_node": "node_1975", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1975", + "to_node": "node_1976", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001959)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1976", + "to_node": "node_1977", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.580)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1977", + "to_node": "node_1978", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1978", + "to_node": "node_1979", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1980", + "to_node": "node_1981", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1981", + "to_node": "node_1982", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002500)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1982", + "to_node": "node_1983", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1983", + "to_node": "node_1984", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003973)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1984", + "to_node": "node_1985", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1985", + "to_node": "node_1986", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.437)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1986", + "to_node": "node_1987", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1988", + "to_node": "node_1989", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002142)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1989", + "to_node": "node_1990", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.166)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1990", + "to_node": "node_1991", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1991", + "to_node": "node_1992", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.269)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1992", + "to_node": "node_1993", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1993", + "to_node": "node_1994", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.536)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1994", + "to_node": "node_1995", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1995", + "to_node": "node_1996", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1997", + "to_node": "node_1998", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.250)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1998", + "to_node": "node_1999", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_1999", + "to_node": "node_2000", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.323)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2000", + "to_node": "node_2001", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2001", + "to_node": "node_2002", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.397)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2002", + "to_node": "node_2003", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2004", + "to_node": "node_2005", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2005", + "to_node": "node_2006", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2006", + "to_node": "node_2007", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2007", + "to_node": "node_2008", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2008", + "to_node": "node_2009", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.114)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2009", + "to_node": "node_2010", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2010", + "to_node": "node_2011", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2011", + "to_node": "node_2012", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2013", + "to_node": "node_2014", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2014", + "to_node": "node_2015", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2015", + "to_node": "node_2016", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2017", + "to_node": "node_2018", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2018", + "to_node": "node_2019", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.366)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2019", + "to_node": "node_2020", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001386)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2020", + "to_node": "node_2021", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2021", + "to_node": "node_2022", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2022", + "to_node": "node_2023", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.186)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2023", + "to_node": "node_2024", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2024", + "to_node": "node_2025", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2026", + "to_node": "node_2027", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001117)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2027", + "to_node": "node_2028", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.506)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2028", + "to_node": "node_2029", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2029", + "to_node": "node_2030", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004928)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2030", + "to_node": "node_2031", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2031", + "to_node": "node_2032", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2032", + "to_node": "node_2033", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.431)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2033", + "to_node": "node_2034", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2035", + "to_node": "node_2036", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001206)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2036", + "to_node": "node_2037", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2037", + "to_node": "node_2038", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2038", + "to_node": "node_2039", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2039", + "to_node": "node_2040", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2040", + "to_node": "node_2041", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2042", + "to_node": "node_2043", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2043", + "to_node": "node_2044", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2044", + "to_node": "node_2045", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001925)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2045", + "to_node": "node_2046", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.333)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2046", + "to_node": "node_2047", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2047", + "to_node": "node_2048", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.326)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2048", + "to_node": "node_2049", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2050", + "to_node": "node_2051", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002129)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2051", + "to_node": "node_2052", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002298)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2052", + "to_node": "node_2053", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005172)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2053", + "to_node": "node_2054", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2054", + "to_node": "node_2055", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.116)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2055", + "to_node": "node_2056", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2057", + "to_node": "node_2058", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.548)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2058", + "to_node": "node_2059", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003513)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2059", + "to_node": "node_2060", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2060", + "to_node": "node_2061", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2061", + "to_node": "node_2062", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2062", + "to_node": "node_2063", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2063", + "to_node": "node_2064", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2065", + "to_node": "node_2066", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.174)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2066", + "to_node": "node_2067", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2067", + "to_node": "node_2068", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.125)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2068", + "to_node": "node_2069", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.590)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2069", + "to_node": "node_2070", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2070", + "to_node": "node_2071", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.600)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2071", + "to_node": "node_2072", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.326)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2072", + "to_node": "node_2073", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2074", + "to_node": "node_2075", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002621)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2075", + "to_node": "node_2076", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2076", + "to_node": "node_2077", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2077", + "to_node": "node_2078", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2079", + "to_node": "node_2080", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.412)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2080", + "to_node": "node_2081", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2081", + "to_node": "node_2082", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001663)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2082", + "to_node": "node_2083", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002166)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2083", + "to_node": "node_2084", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2084", + "to_node": "node_2085", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2086", + "to_node": "node_2087", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.149)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2087", + "to_node": "node_2088", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.582)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2088", + "to_node": "node_2089", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2089", + "to_node": "node_2090", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001703)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2090", + "to_node": "node_2091", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2091", + "to_node": "node_2092", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.136)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2092", + "to_node": "node_2093", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2093", + "to_node": "node_2094", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2095", + "to_node": "node_2096", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.634)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2096", + "to_node": "node_2097", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2097", + "to_node": "node_2098", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2098", + "to_node": "node_2099", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2099", + "to_node": "node_2100", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2101", + "to_node": "node_2102", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002157)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2102", + "to_node": "node_2103", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2103", + "to_node": "node_2104", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002157)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2104", + "to_node": "node_2105", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2105", + "to_node": "node_2106", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.517)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2106", + "to_node": "node_2107", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2108", + "to_node": "node_2109", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.618)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2109", + "to_node": "node_2110", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2110", + "to_node": "node_2111", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2111", + "to_node": "node_2112", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2113", + "to_node": "node_2114", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2114", + "to_node": "node_2115", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.458)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2115", + "to_node": "node_2116", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2116", + "to_node": "node_2117", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2118", + "to_node": "node_2119", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001449)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2119", + "to_node": "node_2120", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.477)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2120", + "to_node": "node_2121", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2121", + "to_node": "node_2122", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2122", + "to_node": "node_2123", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2123", + "to_node": "node_2124", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2124", + "to_node": "node_2125", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2126", + "to_node": "node_2127", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2127", + "to_node": "node_2128", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2128", + "to_node": "node_2129", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2129", + "to_node": "node_2130", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2130", + "to_node": "node_2131", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.389)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2131", + "to_node": "node_2132", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2132", + "to_node": "node_2133", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2134", + "to_node": "node_2135", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2135", + "to_node": "node_2136", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2136", + "to_node": "node_2137", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2137", + "to_node": "node_2138", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2138", + "to_node": "node_2139", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2140", + "to_node": "node_2141", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001837)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2141", + "to_node": "node_2142", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004087)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2142", + "to_node": "node_2143", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001410)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2143", + "to_node": "node_2144", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.208)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2144", + "to_node": "node_2145", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2145", + "to_node": "node_2146", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2147", + "to_node": "node_2148", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2148", + "to_node": "node_2149", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.397)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2149", + "to_node": "node_2150", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001862)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2150", + "to_node": "node_2151", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2151", + "to_node": "node_2152", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2153", + "to_node": "node_2154", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001540)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2154", + "to_node": "node_2155", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.131)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2155", + "to_node": "node_2156", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002100)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2156", + "to_node": "node_2157", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.131)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2157", + "to_node": "node_2158", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2159", + "to_node": "node_2160", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2160", + "to_node": "node_2161", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2161", + "to_node": "node_2162", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2162", + "to_node": "node_2163", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2164", + "to_node": "node_2165", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001735)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2165", + "to_node": "node_2166", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.522)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2166", + "to_node": "node_2167", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.227)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2167", + "to_node": "node_2168", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2168", + "to_node": "node_2169", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2170", + "to_node": "node_2171", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003865)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2171", + "to_node": "node_2172", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2172", + "to_node": "node_2173", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2173", + "to_node": "node_2174", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2175", + "to_node": "node_2176", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2176", + "to_node": "node_2177", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.002823)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2177", + "to_node": "node_2178", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.174)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2178", + "to_node": "node_2179", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2179", + "to_node": "node_2180", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2180", + "to_node": "node_2181", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2181", + "to_node": "node_2182", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2182", + "to_node": "node_2183", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2184", + "to_node": "node_2185", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2185", + "to_node": "node_2186", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.567)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2186", + "to_node": "node_2187", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2187", + "to_node": "node_2188", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.399)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2188", + "to_node": "node_2189", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2189", + "to_node": "node_2190", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2190", + "to_node": "node_2191", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2191", + "to_node": "node_2192", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2193", + "to_node": "node_2194", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2194", + "to_node": "node_2195", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2195", + "to_node": "node_2196", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2196", + "to_node": "node_2197", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2198", + "to_node": "node_2199", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001322)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2199", + "to_node": "node_2200", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.548)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2200", + "to_node": "node_2201", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2201", + "to_node": "node_2202", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2202", + "to_node": "node_2203", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.637)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2203", + "to_node": "node_2204", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2204", + "to_node": "node_2205", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2205", + "to_node": "node_2206", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2207", + "to_node": "node_2208", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.333)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2208", + "to_node": "node_2209", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2209", + "to_node": "node_2210", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002481)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2210", + "to_node": "node_2211", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2211", + "to_node": "node_2212", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2213", + "to_node": "node_2214", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.427)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2214", + "to_node": "node_2215", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2215", + "to_node": "node_2216", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2216", + "to_node": "node_2217", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2217", + "to_node": "node_2218", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.529)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2218", + "to_node": "node_2219", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2219", + "to_node": "node_2220", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2221", + "to_node": "node_2222", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001509)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2222", + "to_node": "node_2223", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2223", + "to_node": "node_2224", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2224", + "to_node": "node_2225", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.560)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2225", + "to_node": "node_2226", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.511)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2226", + "to_node": "node_2227", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2228", + "to_node": "node_2229", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2229", + "to_node": "node_2230", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2230", + "to_node": "node_2231", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.383)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2231", + "to_node": "node_2232", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2232", + "to_node": "node_2233", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2234", + "to_node": "node_2235", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2235", + "to_node": "node_2236", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2236", + "to_node": "node_2237", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2237", + "to_node": "node_2238", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.548)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2238", + "to_node": "node_2239", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.412)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2239", + "to_node": "node_2240", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001570)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2240", + "to_node": "node_2241", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.634)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2241", + "to_node": "node_2242", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2243", + "to_node": "node_2244", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2244", + "to_node": "node_2245", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.592)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2245", + "to_node": "node_2246", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2246", + "to_node": "node_2247", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.250)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2247", + "to_node": "node_2248", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2248", + "to_node": "node_2249", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2250", + "to_node": "node_2251", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.449)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2251", + "to_node": "node_2252", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2252", + "to_node": "node_2253", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2253", + "to_node": "node_2254", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004068)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2254", + "to_node": "node_2255", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2255", + "to_node": "node_2256", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.403)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2256", + "to_node": "node_2257", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2258", + "to_node": "node_2259", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2259", + "to_node": "node_2260", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2260", + "to_node": "node_2261", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2261", + "to_node": "node_2262", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2263", + "to_node": "node_2264", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001970)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2264", + "to_node": "node_2265", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2265", + "to_node": "node_2266", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2266", + "to_node": "node_2267", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.610)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2267", + "to_node": "node_2268", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2268", + "to_node": "node_2269", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2269", + "to_node": "node_2270", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2271", + "to_node": "node_2272", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2272", + "to_node": "node_2273", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001984)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2273", + "to_node": "node_2274", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.294)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2274", + "to_node": "node_2275", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2275", + "to_node": "node_2276", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2277", + "to_node": "node_2278", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.247)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2278", + "to_node": "node_2279", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2279", + "to_node": "node_2280", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.466)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2280", + "to_node": "node_2281", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2282", + "to_node": "node_2283", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2283", + "to_node": "node_2284", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.558)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2284", + "to_node": "node_2285", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.333)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2285", + "to_node": "node_2286", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.149)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2286", + "to_node": "node_2287", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002051)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2287", + "to_node": "node_2288", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2288", + "to_node": "node_2289", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2290", + "to_node": "node_2291", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2291", + "to_node": "node_2292", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2292", + "to_node": "node_2293", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2293", + "to_node": "node_2294", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2295", + "to_node": "node_2296", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2296", + "to_node": "node_2297", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.610)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2297", + "to_node": "node_2298", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2298", + "to_node": "node_2299", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.304)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2299", + "to_node": "node_2300", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2301", + "to_node": "node_2302", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.203)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2302", + "to_node": "node_2303", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2303", + "to_node": "node_2304", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2304", + "to_node": "node_2305", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2305", + "to_node": "node_2306", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2306", + "to_node": "node_2307", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.355)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2307", + "to_node": "node_2308", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2308", + "to_node": "node_2309", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2310", + "to_node": "node_2311", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.114)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2311", + "to_node": "node_2312", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001683)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2312", + "to_node": "node_2313", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2313", + "to_node": "node_2314", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.359)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2314", + "to_node": "node_2315", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2315", + "to_node": "node_2316", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2317", + "to_node": "node_2318", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2318", + "to_node": "node_2319", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2319", + "to_node": "node_2320", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001260)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2320", + "to_node": "node_2321", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.244)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2321", + "to_node": "node_2322", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.404)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2322", + "to_node": "node_2323", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.164)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2323", + "to_node": "node_2324", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2324", + "to_node": "node_2325", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2326", + "to_node": "node_2327", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001478)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2327", + "to_node": "node_2328", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001847)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2328", + "to_node": "node_2329", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004487)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2329", + "to_node": "node_2330", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.629)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2330", + "to_node": "node_2331", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2331", + "to_node": "node_2332", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2333", + "to_node": "node_2334", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2334", + "to_node": "node_2335", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2335", + "to_node": "node_2336", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.112)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2336", + "to_node": "node_2337", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2337", + "to_node": "node_2338", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2339", + "to_node": "node_2340", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.395)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2340", + "to_node": "node_2341", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.613)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2341", + "to_node": "node_2342", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2342", + "to_node": "node_2343", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2343", + "to_node": "node_2344", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2344", + "to_node": "node_2345", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2346", + "to_node": "node_2347", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001797)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2347", + "to_node": "node_2348", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.111)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2348", + "to_node": "node_2349", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.445)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2349", + "to_node": "node_2350", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001534)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2350", + "to_node": "node_2351", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2351", + "to_node": "node_2352", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2352", + "to_node": "node_2353", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2354", + "to_node": "node_2355", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000993)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2355", + "to_node": "node_2356", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.170)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2356", + "to_node": "node_2357", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.350)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2357", + "to_node": "node_2358", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003366)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2358", + "to_node": "node_2359", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2359", + "to_node": "node_2360", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.148)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2360", + "to_node": "node_2361", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2361", + "to_node": "node_2362", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2363", + "to_node": "node_2364", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002123)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2364", + "to_node": "node_2365", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.502)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2365", + "to_node": "node_2366", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2366", + "to_node": "node_2367", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002767)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2367", + "to_node": "node_2368", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001760)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2368", + "to_node": "node_2369", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2369", + "to_node": "node_2370", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2371", + "to_node": "node_2372", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.393)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2372", + "to_node": "node_2373", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001816)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2373", + "to_node": "node_2374", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2374", + "to_node": "node_2375", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.397)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2375", + "to_node": "node_2376", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2376", + "to_node": "node_2377", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2377", + "to_node": "node_2378", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.346)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2378", + "to_node": "node_2379", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2380", + "to_node": "node_2381", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.186)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2381", + "to_node": "node_2382", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002002)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2382", + "to_node": "node_2383", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2383", + "to_node": "node_2384", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2385", + "to_node": "node_2386", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2386", + "to_node": "node_2387", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2387", + "to_node": "node_2388", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.511)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2388", + "to_node": "node_2389", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.433)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2389", + "to_node": "node_2390", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2390", + "to_node": "node_2391", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.508)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2391", + "to_node": "node_2392", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2392", + "to_node": "node_2393", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2394", + "to_node": "node_2395", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2395", + "to_node": "node_2396", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002584)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2396", + "to_node": "node_2397", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2397", + "to_node": "node_2398", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2399", + "to_node": "node_2400", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2400", + "to_node": "node_2401", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2401", + "to_node": "node_2402", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2402", + "to_node": "node_2403", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2404", + "to_node": "node_2405", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2405", + "to_node": "node_2406", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2406", + "to_node": "node_2407", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2407", + "to_node": "node_2408", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2409", + "to_node": "node_2410", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001342)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2410", + "to_node": "node_2411", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2411", + "to_node": "node_2412", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2412", + "to_node": "node_2413", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2413", + "to_node": "node_2414", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002068)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2414", + "to_node": "node_2415", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2415", + "to_node": "node_2416", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.241)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2416", + "to_node": "node_2417", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2418", + "to_node": "node_2419", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.153)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2419", + "to_node": "node_2420", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.214)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2420", + "to_node": "node_2421", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2421", + "to_node": "node_2422", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2422", + "to_node": "node_2423", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2424", + "to_node": "node_2425", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.629)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2425", + "to_node": "node_2426", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.304)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2426", + "to_node": "node_2427", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.473)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2427", + "to_node": "node_2428", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2429", + "to_node": "node_2430", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002022)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2430", + "to_node": "node_2431", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.244)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2431", + "to_node": "node_2432", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001552)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2432", + "to_node": "node_2433", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.269)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2433", + "to_node": "node_2434", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2435", + "to_node": "node_2436", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.389)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2436", + "to_node": "node_2437", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2437", + "to_node": "node_2438", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2438", + "to_node": "node_2439", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2439", + "to_node": "node_2440", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2441", + "to_node": "node_2442", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2442", + "to_node": "node_2443", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2443", + "to_node": "node_2444", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.637)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2444", + "to_node": "node_2445", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.560)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2445", + "to_node": "node_2446", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.145)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2446", + "to_node": "node_2447", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2447", + "to_node": "node_2448", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2448", + "to_node": "node_2449", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2450", + "to_node": "node_2451", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003616)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2451", + "to_node": "node_2452", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.466)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2452", + "to_node": "node_2453", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2453", + "to_node": "node_2454", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.206)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2454", + "to_node": "node_2455", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2455", + "to_node": "node_2456", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.575)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2456", + "to_node": "node_2457", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.256)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2457", + "to_node": "node_2458", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2459", + "to_node": "node_2460", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2460", + "to_node": "node_2461", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002230)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2461", + "to_node": "node_2462", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004157)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2462", + "to_node": "node_2463", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.157)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2463", + "to_node": "node_2464", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001641)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2464", + "to_node": "node_2465", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2465", + "to_node": "node_2466", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2467", + "to_node": "node_2468", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002509)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2468", + "to_node": "node_2469", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2469", + "to_node": "node_2470", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.383)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2470", + "to_node": "node_2471", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2472", + "to_node": "node_2473", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.370)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2473", + "to_node": "node_2474", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.372)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2474", + "to_node": "node_2475", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.145)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2475", + "to_node": "node_2476", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.149)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2476", + "to_node": "node_2477", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2478", + "to_node": "node_2479", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2479", + "to_node": "node_2480", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.117)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2480", + "to_node": "node_2481", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.164)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2481", + "to_node": "node_2482", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002454)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2482", + "to_node": "node_2483", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.261)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2483", + "to_node": "node_2484", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2485", + "to_node": "node_2486", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002288)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2486", + "to_node": "node_2487", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.121)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2487", + "to_node": "node_2488", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2488", + "to_node": "node_2489", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2489", + "to_node": "node_2490", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 67%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.667)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2490", + "to_node": "node_2491", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.309)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2491", + "to_node": "node_2492", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2493", + "to_node": "node_2494", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2494", + "to_node": "node_2495", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.272)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2495", + "to_node": "node_2496", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2496", + "to_node": "node_2497", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.368)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2497", + "to_node": "node_2498", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.466)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2498", + "to_node": "node_2499", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2499", + "to_node": "node_2500", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2501", + "to_node": "node_2502", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.145)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2502", + "to_node": "node_2503", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.577)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2503", + "to_node": "node_2504", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2504", + "to_node": "node_2505", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2506", + "to_node": "node_2507", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2507", + "to_node": "node_2508", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2508", + "to_node": "node_2509", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2509", + "to_node": "node_2510", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2511", + "to_node": "node_2512", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.229)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2512", + "to_node": "node_2513", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.344)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2513", + "to_node": "node_2514", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2514", + "to_node": "node_2515", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2516", + "to_node": "node_2517", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2517", + "to_node": "node_2518", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.623)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2518", + "to_node": "node_2519", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.304)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2519", + "to_node": "node_2520", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2521", + "to_node": "node_2522", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003702)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2522", + "to_node": "node_2523", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001645)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2523", + "to_node": "node_2524", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.639)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2524", + "to_node": "node_2525", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2525", + "to_node": "node_2526", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2526", + "to_node": "node_2527", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2527", + "to_node": "node_2528", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2529", + "to_node": "node_2530", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.211)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2530", + "to_node": "node_2531", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2531", + "to_node": "node_2532", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.597)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2532", + "to_node": "node_2533", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2534", + "to_node": "node_2535", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2535", + "to_node": "node_2536", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2536", + "to_node": "node_2537", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2537", + "to_node": "node_2538", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2539", + "to_node": "node_2540", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001992)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2540", + "to_node": "node_2541", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.289)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2541", + "to_node": "node_2542", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.362)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2542", + "to_node": "node_2543", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.443)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2543", + "to_node": "node_2544", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.473)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2544", + "to_node": "node_2545", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2546", + "to_node": "node_2547", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001246)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2547", + "to_node": "node_2548", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2548", + "to_node": "node_2549", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001763)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2549", + "to_node": "node_2550", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2550", + "to_node": "node_2551", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.259)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2551", + "to_node": "node_2552", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2553", + "to_node": "node_2554", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2554", + "to_node": "node_2555", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.495)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2555", + "to_node": "node_2556", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2556", + "to_node": "node_2557", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2558", + "to_node": "node_2559", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2559", + "to_node": "node_2560", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.170)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2560", + "to_node": "node_2561", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004385)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2561", + "to_node": "node_2562", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2562", + "to_node": "node_2563", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2564", + "to_node": "node_2565", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2565", + "to_node": "node_2566", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2566", + "to_node": "node_2567", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.241)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2567", + "to_node": "node_2568", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2568", + "to_node": "node_2569", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.621)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2569", + "to_node": "node_2570", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2570", + "to_node": "node_2571", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.410)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2571", + "to_node": "node_2572", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2573", + "to_node": "node_2574", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004074)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2574", + "to_node": "node_2575", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2575", + "to_node": "node_2576", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.129)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2576", + "to_node": "node_2577", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2578", + "to_node": "node_2579", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004425)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2579", + "to_node": "node_2580", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002374)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2580", + "to_node": "node_2581", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2581", + "to_node": "node_2582", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.597)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2582", + "to_node": "node_2583", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.196)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2583", + "to_node": "node_2584", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.304)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2584", + "to_node": "node_2585", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.443)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2585", + "to_node": "node_2586", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2587", + "to_node": "node_2588", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004204)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2588", + "to_node": "node_2589", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2589", + "to_node": "node_2590", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.193)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2590", + "to_node": "node_2591", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002541)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2591", + "to_node": "node_2592", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2592", + "to_node": "node_2593", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2594", + "to_node": "node_2595", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2595", + "to_node": "node_2596", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2596", + "to_node": "node_2597", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002526)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2597", + "to_node": "node_2598", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2598", + "to_node": "node_2599", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2600", + "to_node": "node_2601", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2601", + "to_node": "node_2602", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2602", + "to_node": "node_2603", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2603", + "to_node": "node_2604", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2605", + "to_node": "node_2606", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2606", + "to_node": "node_2607", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.333)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2607", + "to_node": "node_2608", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002535)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2608", + "to_node": "node_2609", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2609", + "to_node": "node_2610", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2611", + "to_node": "node_2612", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001696)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2612", + "to_node": "node_2613", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2613", + "to_node": "node_2614", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2614", + "to_node": "node_2615", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2615", + "to_node": "node_2616", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2617", + "to_node": "node_2618", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2618", + "to_node": "node_2619", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2619", + "to_node": "node_2620", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.527)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2620", + "to_node": "node_2621", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2621", + "to_node": "node_2622", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.178)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2622", + "to_node": "node_2623", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2624", + "to_node": "node_2625", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2625", + "to_node": "node_2626", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.203)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2626", + "to_node": "node_2627", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.161)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2627", + "to_node": "node_2628", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2628", + "to_node": "node_2629", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2630", + "to_node": "node_2631", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2631", + "to_node": "node_2632", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002089)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2632", + "to_node": "node_2633", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.575)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2633", + "to_node": "node_2634", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2634", + "to_node": "node_2635", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.138)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2635", + "to_node": "node_2636", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2637", + "to_node": "node_2638", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.174)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2638", + "to_node": "node_2639", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2639", + "to_node": "node_2640", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.149)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2640", + "to_node": "node_2641", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.129)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2641", + "to_node": "node_2642", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.247)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2642", + "to_node": "node_2643", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2643", + "to_node": "node_2644", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.439)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2644", + "to_node": "node_2645", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2646", + "to_node": "node_2647", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.479)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2647", + "to_node": "node_2648", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2648", + "to_node": "node_2649", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2649", + "to_node": "node_2650", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2651", + "to_node": "node_2652", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2652", + "to_node": "node_2653", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.366)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2653", + "to_node": "node_2654", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2654", + "to_node": "node_2655", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2655", + "to_node": "node_2656", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2656", + "to_node": "node_2657", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001990)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2657", + "to_node": "node_2658", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.289)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2658", + "to_node": "node_2659", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2660", + "to_node": "node_2661", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001242)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2661", + "to_node": "node_2662", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.193)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2662", + "to_node": "node_2663", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001137)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2663", + "to_node": "node_2664", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2664", + "to_node": "node_2665", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.289)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2665", + "to_node": "node_2666", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005018)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2666", + "to_node": "node_2667", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.138)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2667", + "to_node": "node_2668", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2669", + "to_node": "node_2670", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.362)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2670", + "to_node": "node_2671", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.114)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2671", + "to_node": "node_2672", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.302)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2672", + "to_node": "node_2673", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001989)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2673", + "to_node": "node_2674", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2674", + "to_node": "node_2675", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004831)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2675", + "to_node": "node_2676", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2676", + "to_node": "node_2677", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2678", + "to_node": "node_2679", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.379)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2679", + "to_node": "node_2680", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004607)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2680", + "to_node": "node_2681", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.253)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2681", + "to_node": "node_2682", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2683", + "to_node": "node_2684", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2684", + "to_node": "node_2685", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2685", + "to_node": "node_2686", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2686", + "to_node": "node_2687", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2687", + "to_node": "node_2688", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2689", + "to_node": "node_2690", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002100)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2690", + "to_node": "node_2691", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.166)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2691", + "to_node": "node_2692", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2692", + "to_node": "node_2693", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.431)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2693", + "to_node": "node_2694", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2695", + "to_node": "node_2696", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001876)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2696", + "to_node": "node_2697", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.484)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2697", + "to_node": "node_2698", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2698", + "to_node": "node_2699", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2699", + "to_node": "node_2700", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.186)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2700", + "to_node": "node_2701", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002246)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2701", + "to_node": "node_2702", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.143)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2702", + "to_node": "node_2703", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2704", + "to_node": "node_2705", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001821)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2705", + "to_node": "node_2706", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.408)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2706", + "to_node": "node_2707", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2707", + "to_node": "node_2708", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2708", + "to_node": "node_2709", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2710", + "to_node": "node_2711", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.642)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2711", + "to_node": "node_2712", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2712", + "to_node": "node_2713", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.600)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2713", + "to_node": "node_2714", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2714", + "to_node": "node_2715", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2716", + "to_node": "node_2717", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2717", + "to_node": "node_2718", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.312)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2718", + "to_node": "node_2719", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2719", + "to_node": "node_2720", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2721", + "to_node": "node_2722", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004677)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2722", + "to_node": "node_2723", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.218)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2723", + "to_node": "node_2724", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2724", + "to_node": "node_2725", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2726", + "to_node": "node_2727", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.335)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2727", + "to_node": "node_2728", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2728", + "to_node": "node_2729", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2729", + "to_node": "node_2730", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2731", + "to_node": "node_2732", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 66%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.656)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2732", + "to_node": "node_2733", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.468)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2733", + "to_node": "node_2734", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2734", + "to_node": "node_2735", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2735", + "to_node": "node_2736", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.133)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2736", + "to_node": "node_2737", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2738", + "to_node": "node_2739", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2739", + "to_node": "node_2740", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2740", + "to_node": "node_2741", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2741", + "to_node": "node_2742", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2742", + "to_node": "node_2743", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2743", + "to_node": "node_2744", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2745", + "to_node": "node_2746", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2746", + "to_node": "node_2747", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.613)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2747", + "to_node": "node_2748", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2748", + "to_node": "node_2749", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2749", + "to_node": "node_2750", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2751", + "to_node": "node_2752", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002072)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2752", + "to_node": "node_2753", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.147)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2753", + "to_node": "node_2754", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.340)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2754", + "to_node": "node_2755", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2755", + "to_node": "node_2756", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2756", + "to_node": "node_2757", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 41%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.406)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2757", + "to_node": "node_2758", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2759", + "to_node": "node_2760", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.515)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2760", + "to_node": "node_2761", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2761", + "to_node": "node_2762", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2762", + "to_node": "node_2763", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2763", + "to_node": "node_2764", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2765", + "to_node": "node_2766", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005098)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2766", + "to_node": "node_2767", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2767", + "to_node": "node_2768", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2768", + "to_node": "node_2769", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.527)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2769", + "to_node": "node_2770", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2770", + "to_node": "node_2771", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2772", + "to_node": "node_2773", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.481)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2773", + "to_node": "node_2774", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2774", + "to_node": "node_2775", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.497)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2775", + "to_node": "node_2776", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2776", + "to_node": "node_2777", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2778", + "to_node": "node_2779", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.000926)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2779", + "to_node": "node_2780", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2780", + "to_node": "node_2781", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2781", + "to_node": "node_2782", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004348)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2782", + "to_node": "node_2783", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2783", + "to_node": "node_2784", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2784", + "to_node": "node_2785", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2785", + "to_node": "node_2786", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2787", + "to_node": "node_2788", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 11%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.114)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2788", + "to_node": "node_2789", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2789", + "to_node": "node_2790", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2790", + "to_node": "node_2791", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2792", + "to_node": "node_2793", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.372)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2793", + "to_node": "node_2794", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2794", + "to_node": "node_2795", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.653)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2795", + "to_node": "node_2796", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2797", + "to_node": "node_2798", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004697)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2798", + "to_node": "node_2799", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001934)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2799", + "to_node": "node_2800", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2800", + "to_node": "node_2801", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.229)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2801", + "to_node": "node_2802", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2803", + "to_node": "node_2804", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.653)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2804", + "to_node": "node_2805", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001866)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2805", + "to_node": "node_2806", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.272)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2806", + "to_node": "node_2807", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2807", + "to_node": "node_2808", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2809", + "to_node": "node_2810", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001847)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2810", + "to_node": "node_2811", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.192)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2811", + "to_node": "node_2812", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004954)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2812", + "to_node": "node_2813", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2813", + "to_node": "node_2814", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.166)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2814", + "to_node": "node_2815", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2816", + "to_node": "node_2817", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2817", + "to_node": "node_2818", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2818", + "to_node": "node_2819", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2819", + "to_node": "node_2820", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2821", + "to_node": "node_2822", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.511)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2822", + "to_node": "node_2823", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001982)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2823", + "to_node": "node_2824", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002139)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2824", + "to_node": "node_2825", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.335)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2825", + "to_node": "node_2826", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2826", + "to_node": "node_2827", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.582)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2827", + "to_node": "node_2828", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2829", + "to_node": "node_2830", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001736)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2830", + "to_node": "node_2831", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.355)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2831", + "to_node": "node_2832", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001704)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2832", + "to_node": "node_2833", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2833", + "to_node": "node_2834", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2834", + "to_node": "node_2835", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2836", + "to_node": "node_2837", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001356)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2837", + "to_node": "node_2838", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003051)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2838", + "to_node": "node_2839", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2839", + "to_node": "node_2840", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2840", + "to_node": "node_2841", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002008)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2841", + "to_node": "node_2842", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2842", + "to_node": "node_2843", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2843", + "to_node": "node_2844", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2845", + "to_node": "node_2846", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.381)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2846", + "to_node": "node_2847", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001336)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2847", + "to_node": "node_2848", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.292)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2848", + "to_node": "node_2849", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2849", + "to_node": "node_2850", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.418)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2850", + "to_node": "node_2851", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.529)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2851", + "to_node": "node_2852", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2853", + "to_node": "node_2854", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2854", + "to_node": "node_2855", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003744)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2855", + "to_node": "node_2856", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2856", + "to_node": "node_2857", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001646)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2857", + "to_node": "node_2858", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.196)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2858", + "to_node": "node_2859", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2859", + "to_node": "node_2860", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2861", + "to_node": "node_2862", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2862", + "to_node": "node_2863", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.178)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2863", + "to_node": "node_2864", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.631)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2864", + "to_node": "node_2865", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.193)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2865", + "to_node": "node_2866", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.263)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2866", + "to_node": "node_2867", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.131)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2867", + "to_node": "node_2868", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2869", + "to_node": "node_2870", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005007)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2870", + "to_node": "node_2871", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.366)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2871", + "to_node": "node_2872", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2872", + "to_node": "node_2873", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2873", + "to_node": "node_2874", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.152)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2874", + "to_node": "node_2875", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.309)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2875", + "to_node": "node_2876", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2877", + "to_node": "node_2878", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.002159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2878", + "to_node": "node_2879", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2879", + "to_node": "node_2880", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2880", + "to_node": "node_2881", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2881", + "to_node": "node_2882", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.621)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2882", + "to_node": "node_2883", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2884", + "to_node": "node_2885", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2885", + "to_node": "node_2886", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.160)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2886", + "to_node": "node_2887", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.484)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2887", + "to_node": "node_2888", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2888", + "to_node": "node_2889", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2890", + "to_node": "node_2891", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001814)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2891", + "to_node": "node_2892", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2892", + "to_node": "node_2893", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003427)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2893", + "to_node": "node_2894", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.209)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2894", + "to_node": "node_2895", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2895", + "to_node": "node_2896", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2896", + "to_node": "node_2897", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.326)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2897", + "to_node": "node_2898", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2899", + "to_node": "node_2900", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2900", + "to_node": "node_2901", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2901", + "to_node": "node_2902", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2902", + "to_node": "node_2903", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.582)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2903", + "to_node": "node_2904", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.538)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2904", + "to_node": "node_2905", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2906", + "to_node": "node_2907", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001897)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2907", + "to_node": "node_2908", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.558)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2908", + "to_node": "node_2909", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002048)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2909", + "to_node": "node_2910", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2910", + "to_node": "node_2911", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2911", + "to_node": "node_2912", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2912", + "to_node": "node_2913", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2914", + "to_node": "node_2915", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2915", + "to_node": "node_2916", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.340)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2916", + "to_node": "node_2917", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.543)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2917", + "to_node": "node_2918", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2919", + "to_node": "node_2920", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001652)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2920", + "to_node": "node_2921", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2921", + "to_node": "node_2922", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.401)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2922", + "to_node": "node_2923", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001686)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2923", + "to_node": "node_2924", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.294)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2924", + "to_node": "node_2925", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2925", + "to_node": "node_2926", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.462)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2926", + "to_node": "node_2927", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2928", + "to_node": "node_2929", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2929", + "to_node": "node_2930", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004648)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2930", + "to_node": "node_2931", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.471)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2931", + "to_node": "node_2932", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.229)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2932", + "to_node": "node_2933", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2933", + "to_node": "node_2934", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 37%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.370)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2934", + "to_node": "node_2935", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2935", + "to_node": "node_2936", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2937", + "to_node": "node_2938", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.383)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2938", + "to_node": "node_2939", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.385)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2939", + "to_node": "node_2940", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.567)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2940", + "to_node": "node_2941", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2941", + "to_node": "node_2942", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2942", + "to_node": "node_2943", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2944", + "to_node": "node_2945", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2945", + "to_node": "node_2946", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001386)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2946", + "to_node": "node_2947", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2947", + "to_node": "node_2948", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2948", + "to_node": "node_2949", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.477)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2949", + "to_node": "node_2950", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.543)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2950", + "to_node": "node_2951", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2952", + "to_node": "node_2953", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2953", + "to_node": "node_2954", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004133)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2954", + "to_node": "node_2955", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.362)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2955", + "to_node": "node_2956", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.203)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2956", + "to_node": "node_2957", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.148)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2957", + "to_node": "node_2958", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2959", + "to_node": "node_2960", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2960", + "to_node": "node_2961", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2961", + "to_node": "node_2962", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002675)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2962", + "to_node": "node_2963", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 65%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.653)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2963", + "to_node": "node_2964", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.157)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2964", + "to_node": "node_2965", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2966", + "to_node": "node_2967", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2967", + "to_node": "node_2968", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2968", + "to_node": "node_2969", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.458)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2969", + "to_node": "node_2970", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005150)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2970", + "to_node": "node_2971", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.121)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2971", + "to_node": "node_2972", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2972", + "to_node": "node_2973", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2974", + "to_node": "node_2975", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.130)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2975", + "to_node": "node_2976", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.272)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2976", + "to_node": "node_2977", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2977", + "to_node": "node_2978", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2978", + "to_node": "node_2979", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2979", + "to_node": "node_2980", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2981", + "to_node": "node_2982", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001063)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2982", + "to_node": "node_2983", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.456)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2983", + "to_node": "node_2984", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.277)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2984", + "to_node": "node_2985", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2985", + "to_node": "node_2986", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2987", + "to_node": "node_2988", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2988", + "to_node": "node_2989", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.294)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2989", + "to_node": "node_2990", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.152)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2990", + "to_node": "node_2991", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2992", + "to_node": "node_2993", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2993", + "to_node": "node_2994", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.572)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2994", + "to_node": "node_2995", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2995", + "to_node": "node_2996", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.488)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2996", + "to_node": "node_2997", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2998", + "to_node": "node_2999", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.134)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_2999", + "to_node": "node_3000", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.200)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3000", + "to_node": "node_3001", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.279)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3001", + "to_node": "node_3002", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002014)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3002", + "to_node": "node_3003", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3003", + "to_node": "node_3004", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3005", + "to_node": "node_3006", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.172)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3006", + "to_node": "node_3007", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.232)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3007", + "to_node": "node_3008", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.431)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3008", + "to_node": "node_3009", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.267)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3009", + "to_node": "node_3010", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3011", + "to_node": "node_3012", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3012", + "to_node": "node_3013", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3013", + "to_node": "node_3014", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3015", + "to_node": "node_3016", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.285)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3016", + "to_node": "node_3017", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.151)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3017", + "to_node": "node_3018", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3018", + "to_node": "node_3019", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3020", + "to_node": "node_3021", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005024)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3021", + "to_node": "node_3022", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.148)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3022", + "to_node": "node_3023", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3023", + "to_node": "node_3024", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3024", + "to_node": "node_3025", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.208)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3025", + "to_node": "node_3026", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3026", + "to_node": "node_3027", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3028", + "to_node": "node_3029", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001812)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3029", + "to_node": "node_3030", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3030", + "to_node": "node_3031", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001502)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3031", + "to_node": "node_3032", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002361)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3032", + "to_node": "node_3033", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3033", + "to_node": "node_3034", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3035", + "to_node": "node_3036", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.346)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3036", + "to_node": "node_3037", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3037", + "to_node": "node_3038", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001912)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3038", + "to_node": "node_3039", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3039", + "to_node": "node_3040", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3040", + "to_node": "node_3041", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 54%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.538)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3041", + "to_node": "node_3042", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3043", + "to_node": "node_3044", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.353)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3044", + "to_node": "node_3045", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001693)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3045", + "to_node": "node_3046", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3046", + "to_node": "node_3047", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3048", + "to_node": "node_3049", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3049", + "to_node": "node_3050", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 52%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.522)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3050", + "to_node": "node_3051", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.580)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3051", + "to_node": "node_3052", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3053", + "to_node": "node_3054", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.319)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3054", + "to_node": "node_3055", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3055", + "to_node": "node_3056", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3056", + "to_node": "node_3057", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.133)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3057", + "to_node": "node_3058", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.245)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3058", + "to_node": "node_3059", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.185)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3059", + "to_node": "node_3060", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3061", + "to_node": "node_3062", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.377)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3062", + "to_node": "node_3063", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.477)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3063", + "to_node": "node_3064", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001988)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3064", + "to_node": "node_3065", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001841)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3065", + "to_node": "node_3066", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3066", + "to_node": "node_3067", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3067", + "to_node": "node_3068", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3069", + "to_node": "node_3070", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.170)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3070", + "to_node": "node_3071", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3071", + "to_node": "node_3072", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3072", + "to_node": "node_3073", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004691)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3073", + "to_node": "node_3074", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3074", + "to_node": "node_3075", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3076", + "to_node": "node_3077", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3077", + "to_node": "node_3078", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.272)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3078", + "to_node": "node_3079", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.163)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3079", + "to_node": "node_3080", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.217)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3080", + "to_node": "node_3081", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3081", + "to_node": "node_3082", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.637)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3082", + "to_node": "node_3083", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3084", + "to_node": "node_3085", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.172)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3085", + "to_node": "node_3086", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3086", + "to_node": "node_3087", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.143)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3087", + "to_node": "node_3088", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.590)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3088", + "to_node": "node_3089", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004355)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3089", + "to_node": "node_3090", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3090", + "to_node": "node_3091", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.321)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3091", + "to_node": "node_3092", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3093", + "to_node": "node_3094", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3094", + "to_node": "node_3095", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 59%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.587)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3095", + "to_node": "node_3096", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.186)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3096", + "to_node": "node_3097", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3098", + "to_node": "node_3099", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001549)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3099", + "to_node": "node_3100", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3100", + "to_node": "node_3101", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.152)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3101", + "to_node": "node_3102", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3103", + "to_node": "node_3104", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3104", + "to_node": "node_3105", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.311)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3105", + "to_node": "node_3106", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 43%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.429)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3106", + "to_node": "node_3107", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 36%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.357)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3107", + "to_node": "node_3108", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3108", + "to_node": "node_3109", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3110", + "to_node": "node_3111", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3111", + "to_node": "node_3112", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001656)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3112", + "to_node": "node_3113", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3113", + "to_node": "node_3114", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3114", + "to_node": "node_3115", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3115", + "to_node": "node_3116", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3117", + "to_node": "node_3118", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3118", + "to_node": "node_3119", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.497)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3119", + "to_node": "node_3120", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.233)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3120", + "to_node": "node_3121", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.634)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3121", + "to_node": "node_3122", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3122", + "to_node": "node_3123", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3124", + "to_node": "node_3125", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.416)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3125", + "to_node": "node_3126", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.330)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3126", + "to_node": "node_3127", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002392)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3127", + "to_node": "node_3128", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3128", + "to_node": "node_3129", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3130", + "to_node": "node_3131", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3131", + "to_node": "node_3132", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001515)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3132", + "to_node": "node_3133", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.495)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3133", + "to_node": "node_3134", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.300)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3134", + "to_node": "node_3135", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.393)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3135", + "to_node": "node_3136", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.460)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3136", + "to_node": "node_3137", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3137", + "to_node": "node_3138", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3139", + "to_node": "node_3140", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3140", + "to_node": "node_3141", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.290)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3141", + "to_node": "node_3142", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3142", + "to_node": "node_3143", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3144", + "to_node": "node_3145", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004053)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3145", + "to_node": "node_3146", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.340)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3146", + "to_node": "node_3147", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.381)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3147", + "to_node": "node_3148", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3148", + "to_node": "node_3149", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3149", + "to_node": "node_3150", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 58%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.582)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3150", + "to_node": "node_3151", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3151", + "to_node": "node_3152", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3153", + "to_node": "node_3154", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001622)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3154", + "to_node": "node_3155", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3155", + "to_node": "node_3156", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002000)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3156", + "to_node": "node_3157", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001658)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3157", + "to_node": "node_3158", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3158", + "to_node": "node_3159", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3160", + "to_node": "node_3161", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.422)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3161", + "to_node": "node_3162", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3162", + "to_node": "node_3163", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.195)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3163", + "to_node": "node_3164", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3165", + "to_node": "node_3166", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.623)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3166", + "to_node": "node_3167", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.462)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3167", + "to_node": "node_3168", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.350)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3168", + "to_node": "node_3169", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.332)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3169", + "to_node": "node_3170", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.176)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3170", + "to_node": "node_3171", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3171", + "to_node": "node_3172", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 50%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.502)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3172", + "to_node": "node_3173", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3174", + "to_node": "node_3175", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001077)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3175", + "to_node": "node_3176", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3176", + "to_node": "node_3177", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.147)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3177", + "to_node": "node_3178", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.159)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3178", + "to_node": "node_3179", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.282)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3179", + "to_node": "node_3180", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3180", + "to_node": "node_3181", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3182", + "to_node": "node_3183", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 63%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.626)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3183", + "to_node": "node_3184", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.171)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3184", + "to_node": "node_3185", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3185", + "to_node": "node_3186", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.206)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3186", + "to_node": "node_3187", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.117)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3187", + "to_node": "node_3188", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3189", + "to_node": "node_3190", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3190", + "to_node": "node_3191", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.190)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3191", + "to_node": "node_3192", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3192", + "to_node": "node_3193", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.221)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3193", + "to_node": "node_3194", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3194", + "to_node": "node_3195", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.445)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3195", + "to_node": "node_3196", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.152)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3196", + "to_node": "node_3197", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3198", + "to_node": "node_3199", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3199", + "to_node": "node_3200", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001240)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3200", + "to_node": "node_3201", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003635)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3201", + "to_node": "node_3202", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.486)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3202", + "to_node": "node_3203", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3203", + "to_node": "node_3204", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.284)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3204", + "to_node": "node_3205", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3205", + "to_node": "node_3206", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3207", + "to_node": "node_3208", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001807)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3208", + "to_node": "node_3209", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.215)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3209", + "to_node": "node_3210", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.168)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3210", + "to_node": "node_3211", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3211", + "to_node": "node_3212", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.618)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3212", + "to_node": "node_3213", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3213", + "to_node": "node_3214", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3215", + "to_node": "node_3216", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.174)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3216", + "to_node": "node_3217", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3217", + "to_node": "node_3218", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3218", + "to_node": "node_3219", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 66%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.661)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3219", + "to_node": "node_3220", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.181)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3220", + "to_node": "node_3221", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.274)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3221", + "to_node": "node_3222", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3222", + "to_node": "node_3223", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3224", + "to_node": "node_3225", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 61%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.608)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3225", + "to_node": "node_3226", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.443)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3226", + "to_node": "node_3227", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.239)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3227", + "to_node": "node_3228", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004493)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3228", + "to_node": "node_3229", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3229", + "to_node": "node_3230", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.131)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3230", + "to_node": "node_3231", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3232", + "to_node": "node_3233", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3233", + "to_node": "node_3234", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3234", + "to_node": "node_3235", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3235", + "to_node": "node_3236", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3237", + "to_node": "node_3238", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.318)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3238", + "to_node": "node_3239", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3239", + "to_node": "node_3240", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3240", + "to_node": "node_3241", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002031)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3241", + "to_node": "node_3242", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.567)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3242", + "to_node": "node_3243", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.477)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3243", + "to_node": "node_3244", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.263)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3244", + "to_node": "node_3245", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3246", + "to_node": "node_3247", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 46%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.464)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3247", + "to_node": "node_3248", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.227)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3248", + "to_node": "node_3249", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.183)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3249", + "to_node": "node_3250", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3250", + "to_node": "node_3251", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.212)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3251", + "to_node": "node_3252", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3252", + "to_node": "node_3253", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3254", + "to_node": "node_3255", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.490)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3255", + "to_node": "node_3256", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.305)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3256", + "to_node": "node_3257", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.264)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3257", + "to_node": "node_3258", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3259", + "to_node": "node_3260", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.248)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3260", + "to_node": "node_3261", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001747)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3261", + "to_node": "node_3262", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 57%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.575)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3262", + "to_node": "node_3263", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.127)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3263", + "to_node": "node_3264", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3265", + "to_node": "node_3266", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.255)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3266", + "to_node": "node_3267", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002053)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3267", + "to_node": "node_3268", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004569)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3268", + "to_node": "node_3269", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.250)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3269", + "to_node": "node_3270", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 62%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.618)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3270", + "to_node": "node_3271", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3272", + "to_node": "node_3273", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.353)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3273", + "to_node": "node_3274", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3274", + "to_node": "node_3275", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3275", + "to_node": "node_3276", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3277", + "to_node": "node_3278", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.203)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3278", + "to_node": "node_3279", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.198)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3279", + "to_node": "node_3280", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3280", + "to_node": "node_3281", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3281", + "to_node": "node_3282", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3282", + "to_node": "node_3283", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 44%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.437)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3283", + "to_node": "node_3284", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3285", + "to_node": "node_3286", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3286", + "to_node": "node_3287", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.002124)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3287", + "to_node": "node_3288", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.325)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3288", + "to_node": "node_3289", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002293)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3289", + "to_node": "node_3290", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3290", + "to_node": "node_3291", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3292", + "to_node": "node_3293", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.179)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3293", + "to_node": "node_3294", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3294", + "to_node": "node_3295", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.125)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3295", + "to_node": "node_3296", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.193)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3296", + "to_node": "node_3297", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3298", + "to_node": "node_3299", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.236)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3299", + "to_node": "node_3300", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.004446)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3300", + "to_node": "node_3301", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.299)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3301", + "to_node": "node_3302", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.377)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3302", + "to_node": "node_3303", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 24%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.238)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3303", + "to_node": "node_3304", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3305", + "to_node": "node_3306", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001846)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3306", + "to_node": "node_3307", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002405)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3307", + "to_node": "node_3308", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3308", + "to_node": "node_3309", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3309", + "to_node": "node_3310", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3311", + "to_node": "node_3312", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.143)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3312", + "to_node": "node_3313", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.001651)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3313", + "to_node": "node_3314", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3314", + "to_node": "node_3315", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3315", + "to_node": "node_3316", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001999)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3316", + "to_node": "node_3317", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.004804)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3317", + "to_node": "node_3318", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.188)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3318", + "to_node": "node_3319", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3320", + "to_node": "node_3321", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3321", + "to_node": "node_3322", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 55%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.548)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3322", + "to_node": "node_3323", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3323", + "to_node": "node_3324", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3324", + "to_node": "node_3325", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001706)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3325", + "to_node": "node_3326", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 15%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.155)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3326", + "to_node": "node_3327", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 45%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.447)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3327", + "to_node": "node_3328", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3329", + "to_node": "node_3330", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3330", + "to_node": "node_3331", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.314)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3331", + "to_node": "node_3332", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 48%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.477)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3332", + "to_node": "node_3333", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005153)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3333", + "to_node": "node_3334", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.120)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3334", + "to_node": "node_3335", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3336", + "to_node": "node_3337", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001487)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3337", + "to_node": "node_3338", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.280)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3338", + "to_node": "node_3339", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.135)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3339", + "to_node": "node_3340", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.167)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3340", + "to_node": "node_3341", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 40%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.404)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3341", + "to_node": "node_3342", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.490)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3342", + "to_node": "node_3343", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 47%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.473)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3343", + "to_node": "node_3344", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3345", + "to_node": "node_3346", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 19%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.189)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3346", + "to_node": "node_3347", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002288)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3347", + "to_node": "node_3348", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.387)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3348", + "to_node": "node_3349", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.121)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3349", + "to_node": "node_3350", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3351", + "to_node": "node_3352", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001980)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3352", + "to_node": "node_3353", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001642)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3353", + "to_node": "node_3354", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002581)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3354", + "to_node": "node_3355", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3355", + "to_node": "node_3356", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3356", + "to_node": "node_3357", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3358", + "to_node": "node_3359", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001502)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3359", + "to_node": "node_3360", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 33%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.328)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3360", + "to_node": "node_3361", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.269)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3361", + "to_node": "node_3362", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001458)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3362", + "to_node": "node_3363", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 29%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.287)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3363", + "to_node": "node_3364", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 27%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.266)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3364", + "to_node": "node_3365", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3366", + "to_node": "node_3367", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 51%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.513)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3367", + "to_node": "node_3368", + "edge_type": "modification", + "reasoning": "Increase 4 thickness by 49%", + "metadata": null, + "grammar_action": "SCALE_PARAM(4, thickness, 1.488)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3368", + "to_node": "node_3369", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 34%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.344)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3369", + "to_node": "node_3370", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 32%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.316)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3370", + "to_node": "node_3371", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 28%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.276)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3371", + "to_node": "node_3372", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 25%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.252)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3372", + "to_node": "node_3373", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3374", + "to_node": "node_3375", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.003930)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3375", + "to_node": "node_3376", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003974)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3376", + "to_node": "node_3377", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.119)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3377", + "to_node": "node_3378", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.297)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3378", + "to_node": "node_3379", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3380", + "to_node": "node_3381", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 53%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.529)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3381", + "to_node": "node_3382", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.126)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3382", + "to_node": "node_3383", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3383", + "to_node": "node_3384", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3384", + "to_node": "node_3385", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3386", + "to_node": "node_3387", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.002565)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3387", + "to_node": "node_3388", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3388", + "to_node": "node_3389", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 21%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.208)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3389", + "to_node": "node_3390", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3391", + "to_node": "node_3392", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.140)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3392", + "to_node": "node_3393", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.001640)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3393", + "to_node": "node_3394", + "edge_type": "modification", + "reasoning": "Increase 3 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(3, thickness, 1.560)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3394", + "to_node": "node_3395", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.144)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3395", + "to_node": "node_3396", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 17%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.166)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3396", + "to_node": "node_3397", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.178)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3397", + "to_node": "node_3398", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3398", + "to_node": "node_3399", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3400", + "to_node": "node_3401", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3401", + "to_node": "node_3402", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3402", + "to_node": "node_3403", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3403", + "to_node": "node_3404", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3405", + "to_node": "node_3406", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001107)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3406", + "to_node": "node_3407", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 64%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.637)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3407", + "to_node": "node_3408", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 38%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.376)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3408", + "to_node": "node_3409", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 4, A36_Steel, Pipe, 0.015395, 0.002566)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3409", + "to_node": "node_3410", + "edge_type": "modification", + "reasoning": "Increase 0 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(0, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3410", + "to_node": "node_3411", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.003096)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3411", + "to_node": "node_3412", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 42%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.416)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3412", + "to_node": "node_3413", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3413", + "to_node": "node_3414", + "edge_type": "modification", + "reasoning": "Add member connecting joints 2 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(2, 4, A36_Steel, Pipe, 0.034247, 0.005708)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3414", + "to_node": "node_3415", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3416", + "to_node": "node_3417", + "edge_type": "modification", + "reasoning": "Increase 5 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(5, thickness, 1.558)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3417", + "to_node": "node_3418", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.005772)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3418", + "to_node": "node_3419", + "edge_type": "modification", + "reasoning": "Add member connecting joints 3 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(3, 4, A36_Steel, Pipe, 0.011816, 0.001969)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3419", + "to_node": "node_3420", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3421", + "to_node": "node_3422", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.235)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3422", + "to_node": "node_3423", + "edge_type": "modification", + "reasoning": "Increase 10 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(10, thickness, 1.220)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3423", + "to_node": "node_3424", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.295)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3424", + "to_node": "node_3425", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.350)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3425", + "to_node": "node_3426", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 13%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.133)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3426", + "to_node": "node_3427", + "edge_type": "modification", + "reasoning": "Increase 9 thickness by 60%", + "metadata": null, + "grammar_action": "SCALE_PARAM(9, thickness, 1.603)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3427", + "to_node": "node_3428", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3429", + "to_node": "node_3430", + "edge_type": "modification", + "reasoning": "Increase 8 thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(8, thickness, 1.199)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3430", + "to_node": "node_3431", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 31%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.307)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3431", + "to_node": "node_3432", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 56%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.562)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3432", + "to_node": "node_3433", + "edge_type": "modification", + "reasoning": "Increase 2 thickness by 30%", + "metadata": null, + "grammar_action": "SCALE_PARAM(2, thickness, 1.304)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3433", + "to_node": "node_3434", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3435", + "to_node": "node_3436", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001455)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3436", + "to_node": "node_3437", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 20%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.202)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3437", + "to_node": "node_3438", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002278)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3438", + "to_node": "node_3439", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 3", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 3, A36_Steel, Pipe, 0.015390, 0.001888)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3439", + "to_node": "node_3440", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 16%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.156)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3440", + "to_node": "node_3441", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 18%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.175)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3441", + "to_node": "node_3442", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3443", + "to_node": "node_3444", + "edge_type": "modification", + "reasoning": "Add member connecting joints 4 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(4, 5, A36_Steel, Pipe, 0.014255, 0.001940)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3444", + "to_node": "node_3445", + "edge_type": "modification", + "reasoning": "Increase 1 thickness by 26%", + "metadata": null, + "grammar_action": "SCALE_PARAM(1, thickness, 1.258)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3445", + "to_node": "node_3446", + "edge_type": "modification", + "reasoning": "Add member connecting joints 1 and 5", + "metadata": null, + "grammar_action": "ADD_MEMBER(1, 5, A36_Steel, Pipe, 0.018576, 0.002528)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3446", + "to_node": "node_3447", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 23%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.225)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3447", + "to_node": "node_3448", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 39%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.385)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3448", + "to_node": "node_3449", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3450", + "to_node": "node_3451", + "edge_type": "modification", + "reasoning": "Increase 7 thickness by 35%", + "metadata": null, + "grammar_action": "SCALE_PARAM(7, thickness, 1.350)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3451", + "to_node": "node_3452", + "edge_type": "modification", + "reasoning": "Add member connecting joints 0 and 4", + "metadata": null, + "grammar_action": "ADD_MEMBER(0, 4, A36_Steel, Pipe, 0.034629, 0.003977)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3452", + "to_node": "node_3453", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.138)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3453", + "to_node": "node_3454", + "edge_type": "modification", + "reasoning": "Increase 6 thickness by 22%", + "metadata": null, + "grammar_action": "SCALE_PARAM(6, thickness, 1.224)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3454", + "to_node": "node_3455", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 12%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.122)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3455", + "to_node": "node_3456", + "edge_type": "modification", + "reasoning": "Increase all_members thickness by 14%", + "metadata": null, + "grammar_action": "SCALE_PARAM(all_members, thickness, 1.136)", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + }, + { + "from_node": "node_3456", + "to_node": "node_3457", + "edge_type": "modification", + "reasoning": "Optimal solution", + "metadata": null, + "grammar_action": "OPTIMAL_STATE", + "action_type": null, + "target_member": null, + "parameter_name": null, + "old_value": null, + "new_value": null, + "scale_factor": null + } + ] +} \ No newline at end of file